old hat🔊

(idiomatic) Something regarded as very familiar and unoriginal, hackneyed, or out of date.

(idiomatic) Very familiar and unoriginal; common, hackneyed, out of date. +

(slang, archaic) The female genitalia.

(slang, archaic, by extension, derogatory) A woman treated as a sexual partner.

(slang, archaic, by extension) Sexual intercourse.