A small circular window or pane, esp. one made of stained glass. Also: = bull's-eye, n. 1.

A small round or oval window. Cf. bull's-eye, n. 6.

a rose window.

A circular window, esp. one divided into compartments by mullions radiating from a centre, or filled with tracery suggestive of the petals of a…

a circular window with mullions radiating from the centre like the spokes of a wheel (= Catherine wheel, n. 2).

Any of various ornamental or practical devices, frequently of a circular or radial design, likened to a rose in form. = rose window, n.

Architecture. An ornamental perforation resembling a flower; a rose window. Now rare.

A rose window. Also rosace window.

Architecture. A small circular opening or window.

Architecture. (Also Catherine-wheel window.) ‘A window or compartment of a window of a circular form with radiating divisions or spokes’ (Gwilt).

= ox-eye window n. at compounds.