1 definition by Kushi-Kat

Top Definition
An affectionate form of address, usually said by a man to another man, indicating your level of comfort with that person is equal to that of an old, well broken-in boot (as opposed to a cramped, new shoe.)
Thanks for letting me borrow your car, and loaning me gas money.

No worries, old boot, we go way back!
by Kushi-Kat February 06, 2012

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