tag
The word carries a strong sense of identification and categorization. Whether it is a physical label on a suitcase or a digital metadata label on a blog post, the core image is one of marking something to make it easily searchable or recognizable among a crowd of similar things.
In social contexts, the act of tagging has shifted from a physical game of chase to a digital act of public association. This transition reflects a move from tactile interaction to virtual visibility, where tagging someone creates a permanent, public link between two identities.
Countable when referring to a physical label (a price tag). Uncountable when referring to the general act of labeling or the game of tag.
Meanings
A small piece of paper or plastic attached to an object to provide information.
Check the price tag before buying.
To attach a label to something.
The store employees tag every item with a barcode.
Examples
Phrasal Verbs
tag along
to accompany someone, especially when not invited or expected
I hope you don't mind if my younger brother tags along on the trip.
tag on
to add something extra to the end of a statement or a piece of writing
She tagged on a quick apology at the end of her email.