Jillstrap

noun, slang

noun, slang ·Uncommon ·College level

Definitions

Noun
  1. 1
    A pelvic protector, a woman's equivalent of a man's jockstrap. informal

Synonyms

All synonyms

Etymology

By humorous analogy with jockstrap, Jock and Jill being male and female names respectively.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.