based on custom rather than documentation; "an unwritten law"; "rites...so ancient that they well might have had their unwritten origins in Aurignacian times"- J.L.T.C.Spence
highly attractive and able to arouse hope or desire; "an alluring prospect"; "her alluring smile"; "the voice was low and beguiling"; "difficult to say no to an enticing advertisement"; "a tempting invitation"
the body of evidence that constitute the offence; the objective proof that a crime has been committed (sometimes mistakenly thought to refer to the body of a homicide victim)