Merriam-Webster's Collegiate® Dictionary, 11th Edition
VEST
I. verb see: wear
Date: 15th century
transitive verb
1. to place or give into the possession or discretion of some person or authority, to grant or endow with a particular authority, right, or property , to clothe with or as if with a garment, intransitive verb to become legally vested, to put on garments,
II. noun
Etymology: French veste, from Italian, from Latin vestis garment
Date: 1613
1. archaic a loose outer garment ; robe , clothing , garb ,
2. a sleeveless garment for the upper body usually worn over a shirt, a protective usually sleeveless garment (as a life preserver) that extends to the waist, an insulated sleeveless waist-length garment often worn under or in place of a coat,
3. a man's sleeveless undershirt, a knitted undershirt for women, a plain or decorative piece used to fill in the front neckline of a woman's outer garment (as a blouse or dress), vestlike adjective