Search Result for "sign_up":
Wordnet 3.0

VERB (2)

1. engage by written agreement;
- Example: "They signed two new pitchers for the next season"
[syn: sign, contract, sign on, sign up]

2. join a club, an activity, etc. with the intention to join or participate, "Sign up for yoga classes"; 



WordNet (r) 3.0 (2006):

sign up
    v 1: engage by written agreement; "They signed two new pitchers
         for the next season" [syn: sign, contract, sign on,
         sign up]
    2: join a club, an activity, etc. with the intention to join or
       participate, "Sign up for yoga classes"