1. a small piece of paper, cloth, or other material attached to something to identify or give information about it
2. a children’s game in which one player chases others and tries to touch one of them
3. a word or phrase used to describe or categorize something
Usage: computing

1. to attach a tag or label to something
2. to touch someone in the game of tag
3. to mention someone on social media by using their username
Usage: informal

Examples

• She removed the price tag from her new shirt.
• The children played tag in the playground during recess.
• Please tag your photos with relevant keywords.
• The scientist tagged each specimen with a number.
• You’re it! I tagged you fair and square.
• Don’t forget to tag me in your vacation photos.
• The luggage tag had his name and address on it.
• He was tagged out at second base.