The Collaborative International Dictionary
Tagtail
Tagtail \Tag"tail`\, n.
A worm which has its tail conspicuously colored.
A person who attaches himself to another against the will of the latter; a hanger-on.
Wiktionary
tagtail
n. 1 A worm with a conspicuously-coloured tail. 2 An unwanted hanger-on.