tagger

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. One that tags, especially the pursuer in the game of tag.
2. n. Very thin sheet iron, usually plated with tin.

Century Dictionary and Cyclopedia

1. n. One who tags or attaches one thing to another.
2. n. That which is joined or appended to anything; an appendage.
3. n. The pursuer in the game of tag.
4. n. A device for removing tag-locks from sheep.
5. n. plural Very thin sheet-iron, either coated or not coated with tin. The latter is known as black taggers; the former is sometimes called simply taggers, and sometimes taggers tin. This material is used for a great variety of purposes where cheapness is desirable and strength not essential.
6. n. A sheet of tin-plate of less than the standard gage or size of the box or lot in which it is packed; a light-weight plate. In the United States such sheets are more commonly called wasters.

Wiktionary

1. n. One who tags.
2. n. computing theory A component of a parser that tags words.
3. n. A person who writes graffiti using his or her tag.
4. n. slang The penis.
5. n. computing A program that adds tags for purposes of categorization, e.g. to a music collection.
6. n. That which is pointed like a tag.
7. n. plural Sheets of tin or other plate which run below the gauge.
8. n. A device for removing taglocks from sheep.

GNU Webster's 1913

1. n. One who, or that which, appends or joins one thing to another.
2. n. That which is pointed like a tag.
3. n. Sheets of tin or other plate which run below the gauge.
4. n. A device for removing taglocks from sheep.

WordNet 3.0

1. n. someone who appends or joins one thing to another
2. n. a computer program that attaches labels to the grammatical constituents of textual matter
3. n. someone who assigns labels to the grammatical constituents of textual matter