shoofly

shoo·fly  (shfl)

n.

1. A child's rocker having the seat built between two flat sides cut in the shape of an animal.

2. Slang An undercover police officer who checks on the honesty and performance of other police officers.

Thesaurus

Noun	1.	shoofly - an undercover police officer who investigates other policemen colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech police officer, policeman, officer - a member of a police force; "it was an accident, officer"
	2.	shoofly - a child's rocking chair with the seat built between two flat sides that are shaped to resemble an animal (such as a swan or duck) rocking chair, rocker - a chair mounted on rockers