What is the meaning of Frame?

To construct by fitting and uniting the several parts of the skeleton of any structure; specifically, in woodwork, to put together by cutting parts of one member to fit parts of another. See Dovetail, Halve, v. t., Miter, Tenon, Tooth, Tusk, Scarf, and Splice.

Source: Webster’s Revised Unabridged Dictionary (1913), via OPTED