ad·vi·so·ry [?d v?z?ree] adjective 1. giving advice: providing or of the nature of advice 2. having function of giving advice: having the function of giving advice, usually with the implication that the advice given need not be followed an advisory committee noun (plural ad·vi·so·ries) U.S. 1. informational bulletin: a report that gives facts or data and sometimes advice about a subject, e.g. about economic conditions 2. warning of something to come: an advance notice of something, e.g. a warning of impending severe weather a small craft advisory