A.hawk or falcon, ἴρηξ κίρκος (where ἴρηξ is the generic term, κίρκος the specific), Od.13.87, cf. Il.22.139, A.Pr.857, Arist.HA620a18, Opp.C.1.64; “κίρκου λεπάργου” A.Fr.304.5. (The species cannot be identified.)
II. a kind of wolf, Opp.C.3.304.
III. circle, mostly in form κρίκος (q.v.): hence, ring, IG11 (2).161B49 (Delos, iii B.C.): poet. for Prose κρίκος acc. to Poll.1.94:—neut. pl. κίρκα “ἢ καταδέσματα” PMag.Lond.121.299.
V. unknown stone, Plin.HN37.153.