legal (
http://definr.com/legal)
adj 1: established by or founded upon law or official or accepted
rules [ant:
illegal]
2: of or relating to jurisprudence; "legal loophole"
3: having legal efficacy or force; "a sound title to the
property" [syn:
sound]
4: relating to or characteristic of the profession of law; "the
legal profession"
5: (sports) allowed by official rules; "a legal pass receiver"