κυκλοτερής
-ές
[app. κύκλος + τερ-, τείρω. Rubbed or worn into a circle, but with the force of the second element obscured.]
Round, circular : ἄλσος Od. 17.209.
Sim. : ἐπεὶ κυκλοτερὲς τόξον ἔτεινεν (predicatively, into a (semi-) circle) Il. 4.124.