Webster's Revised Unabridged Dictionary · 1913

Tagger

Tagger , noun

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