armhole

n opening in a garment through which the arm is put 袖孔.

Aristotelian, Aristotle, arithmetic, arithmetical, arithmetically, arithmetician, ark, Arkansas, arm, arm in arm, arm-band (also armlet), armada, armadillo, Armageddon, armament, armature, armchair, armed, armed neutrality, armful, armistice, Armistice Day (US Veterans' Day), armlet, armor, armorial, armory, armour, armour (US armor), armour-plate (US armor-), armoured (US armored), armourer (US armorer), armoury (US armory), armpit, arms, arms race, army, aroma, aromatic, arose, around,