The only question in this case is whether the expression in the lease, “timber suitable for turpentine purposes,” is ambiguous. If it is not, parol evidence is not admissible to vary or contradict the terms of the lease. If it is ambiguous, it may be explained by parol on the theory set forth in the petition. Code, §§ 20-704 (1), 20-703, 38-502; Swanson v. Mobley, 33 Ga. App. 791 (127 S. E. 806); Wheelwright & Co. v. Aiken, 92 Ga. 394 (17 S. E. 610); Ford v. Lawson, 133 Ga. 238 (65 S. E. 444). It would seem that, if the word “timber” is not a word of invariable meaning (Pennington v. Avera, 124 Ga. 147, 52 S. E. 324; Reynolds v. Wingate, 164 Ga. 317, 138 S. E. 666; Neal Lumber &c. Co. v. O’Neal, 175 Ga. 883, 166 S. E. 647; Vandiver v. Byrd-Matthews Lumber Co., 146 Ga. 113, 90 S. E. 960), in that it can not be ascertained from reading the expression exactly or approximately ' what size trees aré included, the expression, “timber suitable for turpentine purposes,” is likewise not an expression of invariable meaning, for the reason that it does not on its face or in connection with facts of which the court can take judicial notice show the minimum size of a pine tree which is suitable for turpentine purposes. We, therefore, hold that the expression is ambiguous and subject to explanation by parol. Such an explanation may be based on the construction placed upon the expression at the time of the execution of the lease. Code, § 20-703; Armistead v. McGuire, 46 Ga. 232; Holloway v. Brown, 171 Ga. 481 (155 S. E. 917); Atlanta Chemical Co. v. Hardin Bag Co., 49 Ga. App. 748 (176 S. E. 772); Hartwell Grocery Co. v. Mountain City Mill Co., 8 Ga. App. 727 (70 S. E. 48); Walnut Creek Milling Co. v. Smith Brothers Co., 178 Ga. 341 (173 S. E. 95). The case of Carter v. Williamson & Co., 106 Ga. 280 (31 S. E. 651), *879relied on by the defendant in error, is distinguishable. It was there stated that a lease of “all of the round timber, or timber suitable for turpentine purposes,” on designated lots of land, each described as containing a specified number of acres, was not ambiguous. The question involved there, as in Cherry Lake Co. v. Lanier Armstrong Co., 10 Ga. App. 341 (73 S. E. 610) was the identity of the land and not the dimensions of the timber, and all that the courts meant to say was that the descriptions of the lands were not ambiguous. It follows that the court did not err in overruling the general demurrer.
There being a dissent, the case was'passed on by the court as a whole under the provisions of the act of 1945 (Ga. L. 1945, 232).
Judgment affirmed.
Broyles, C. J., Sutton, P. J., MacIntyre, and Gardner, JJ., concur. Parker, J., dissents.