armpit
noun
- area of human body beneath joint between arm and torso
Wiktionary
Pronunciation: /ˈɑɹmˌpɪt/
noun
Etymology: From Middle English armpitt, arme-pitt, armput, equivalent to arm + pit. (something unpleasant): Presumably a reference to underarm body odor.
- The cavity beneath the junction of the arm and shoulder.
“She stood a couple of feet away from me […] exposing an edge of brassière strap at her armpit―exposing the armpit itself, a muscular hollow shadowed with fine stubble and faintly streaked with talcum.”
“Unilever brought its Rexona deodorant to China a decade ago, dreaming of a market with 2.6 billion armpits.”
- Somewhere or something unpleasant or undesirable.
“the armpit of America”