1.
robe, garment, vestment
A traditional garment or robe, particularly the robes worn by Buddhist monks and priests. A literary or formal word for clothing.
2.
batter, coating, breading
The outer coating applied to food before frying, such as the batter on tempura or the breading on tonkatsu.
Usage
Sense 1 (衣 as garment) is literary and formal, mainly used for religious vestments or in classical/poetic contexts. Everyday clothing is 服. The compound 衣替え refers to the seasonal change of wardrobe, traditionally done on June 1 and October 1.
Sense 2 (衣 as batter) is the more common modern usage, especially in cooking contexts. Learners are most likely to encounter this meaning in recipes and food descriptions.