Meaning of SIGN UP

WordNet Dictionary
	Definition:		[v]  join a club, an activity, etc. with the intention to join or participate, "Sign up for yoga classes" [v]  engage by written agreement; "They signed two new pitchers for the next season"
	Websites:
	Synonyms:		contract, fee, sign, sign on
	See Also:		contract out, employ, engage, enlist, fall in, get together, hire, join