chippy

The story

1. Proto-Germanic*kippōną
2. Proto-West Germanic*kippōn
3. Old English*ċippian
4. Old Englishċipp
5. Middle Englishchippe
6. Englishchip
7. English todaychippy

From chip + -y.

First known use, by meaning

• from 19th c. A carpenter.
• from 19th c. A prostitute or promiscuous woman.
• from 20th c. A fish-and-chip shop.
• from 20th c. To take drugs (especially heroin) on an occasional basis, rather than as an addict.