subs. phr. (old).A parly of women. Originally an Oxford term for a tea-party, tea being considered (GROSE) a beverage only fit for women: cf. HEN PARTY and STAG PARTY.
1889. C. WHIBLEY, ed. In Cap and Gown, Characters of Freshmen, p. 176. The studious freshman goeth to a small BITCH-PARTY, and findeth his new gown taken by mistake.