Vest
Part of speech: noun
Definition: A sleeveless garment, often with a low-cut neck, usually worn under a shirt or blouse. A sleeveless garment that buttons down the front, worn over a shirt, and often as part of a suit. A protective sleeveless garment worn over outer clothing.
Part of speech: verb
Definition: (commonly used of financial arrangements) To become vested, to become permanent.
Example sentence: The first thing I bought that was really stylish was in 1969 when I was eleven. I saved up for a black, grey and white tie-dye grandad vest. It was too big - they weren't catering for kids my age - and hung off me, but I loved it.
Waistcoat
Part of speech: noun
Definition: A sleeveless, collarless garment worn over a shirt and under a suit jacket.