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Franking \Frank"ing\, n. (Carp.)
A method of forming a joint at the intersection of
window-sash bars, by cutting away only enough wood to show a
miter.

frank \frank\ (fr[a^][ng]k), v. t. [imp. & p. p. {franked}
(fr[a^][ng]kt); p. pr. & vb. n. {franking}.]
1. To send by public conveyance free of expense. --Dickens.

2. To extempt from charge for postage, as a letter, package,
or packet, etc.