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 v. t. [imp. & p. p. franked p. pr. & vb. n. franking.]
1. To send by public conveyance free of expense.
2. To extempt from charge for postage, as a letter, package, or packet, etc.