tagger
nounUK /ˈtæɡ.ər/
US /ˈtæɡ.ɚ/
A tagger is a person who puts labels on things.
The tagger put a price sticker on every toy in the shop.
OTHER MEANINGS
2. A person who writes graffiti on walls or trains.
The tagger sprayed his name on the wall.
3. A computer program that labels words with their grammar roles.
The tagger marked each word as a noun or verb.
4. A person who follows and watches someone closely.
The detective acted as a tagger on the suspect.