The town filed suit in Superior Court against the defendants asking for an injunction ordering them to remove all boats offered for sale on their lots, remove the temporary plastic-covered structure located on one of the lots, cease operating the farm stand, remove a trailer and two signs from the site, and remove all abandoned underground storage tanks. Eight months after issuance of a preliminary injunction, the town filed a complaint for contempt alleging that the defendants had not complied with the portions of the preliminary injunction ordering removal of the underground storage tanks and the plastic-covered structure, and that during the summer of 1994, one of the defendants, Wallis Barnes, reconstructed the farm stand and sold fruits and vegetables from it.
After a hearing, the judge found on October 21, 1994, that the plastic-covered structure was used as a greenhouse and that the use of the property for farming was a permitted use under the zoning by-laws with the greenhouse as an accessory use. The judge modified the' injunction by deleting the provisions ordering removal of the greenhouse and cessation of operation of the fruit stand.
In September, 1995, a second contempt hearing was held focusing on Barnes’s operation of the farm stand. After the hearing and a view of the premises, the judge found that about one and one-half acres of the total five and one-half acres of land was used for growing crops, sales, and the greenhouse. The balance of the property was either wooded areas or had residential structures on it. She concluded that only a small percentage of the produce and flowers sold at the farm stand was produced on the property. The defendants were permanently enjoined from operating a farm stand, from maintaining a greenhouse without obtaining a building permit, and from failing to remove the abandoned underground storage tanks. Barnes argues on appeal that the judge erred in enjoining him from operating á greenhouse and farm stand. We affirm.
General Laws c. 40A, § 3, as amended by St. 1994, c. 276, §§ 1, 2, states in pertinent part:
“No zoning ordinance or by-law shall . . . prohibit, unreasonably regulate or require a special permit for the use of land for the primary purpose of agriculture . . . nor prohibit, or unreasonably regulate, or require a special permit for the use, expansion, or reconstruction of *902existing structures thereon for the primary purpose of agriculture . . . including those facilities for the sale of produce, . . . provided that during the months of June, July, August, and September of every year or during the harvest season of the primary crop raised on land of the owner or lessee, the majority of such products for sale, based on either gross sales dollars or volume, have been produced by the owner or lessee of the land on which the facility is located, except that all such activities may be limited to parcels of more than five acres in area not zoned for agriculture . . . .” (Emphasis added.)
Without articulating how the judge’s findings support his argument, Barnes contends that the findings establish that he is entitled to an agricultural use exemption. Barnes appears to assume that because his property exceeded five acres and was used in part for agriculture, it automatically qualified for an exemption from the zoning by-law. He ignores, however, the wording of the statute which requires that the primary purpose of the use of the land be for agriculture. Section 3 does not include a definition of the word “primary” in the context of the use of land, and thus we give the word its usual and accepted meaning from “other legal contexts and dictionary definitions.” Building Inspector of Mansfield v. Curvin, 22 Mass. App. Ct. 401, 402 (1986). The inquiry is whether Barnes used his property “primarily” for agriculture. “Primarily” means “chiefly, mainly.” American Heritage Dictionary 1438 (3d ed. 1992). Contrast the use of the word “incidental” in the zoning context: “not... the primary use of the property but rather one which is subordinate and minor in significance.” Henry v. Board of Appeals of Dunstable, 418 Mass. 841, 845 (1994). Since the judge found that slightly less than one-third of the premises was cleared for growing — the majority of the 5.5 acres being wooded and overgrown with some residential use — it was not erroneous for her to conclude that the primary purpose was not agricultural.3
Barnes claims that the judge erred in finding that he had not proved that the majority of the produce sold at the farm stand was grown on the premises. While Barnes did testify as to which vegetables and fruits were grown on the premises and which were bought elsewhere to be sold, we agree with the trial judge that he did not sustain his burden of proof that a majority of the products for sale were produced by him.4 Compare Building Inspector of Chatham v. Kendrick, 17 Mass. App. Ct. 928, 929 (1983) (landowner has burden of proving defense that a nonconforming use existed). In addition, if the premises are not primarily used for agriculture, Barnes is not entitled to a greenhouse as of right under G. L. c. 40A, § 3. See Henry v. Board of Appeals of Dunstable, 418 Mass. at 844 (agricultural use includes uses incidental to primary use of agriculture).
Judgment affirmed.
*903Kenneth K. Quigley, Jr., & Dolores E. O’Neill for Wallis R. Barnes.
Elizabeth A. Lane & Brian W. Riley for the plaintiffs.
The case was submitted on briefs.