Definitions for "Armhole"
Keywords:  sleeve, looser, hole, shorten, garment
A hole for the arm in a garment.
a hole through which you put your arm and where a sleeve can be attached
The larger the armhole the looser the fit. The larger the armhole will, by pattern, shorten the in-sleeve.
Keywords:  armpit, shoulder, cavity
The cavity under the shoulder; the armpit.