A toothed wheel that enmeshes with a chain or other perforated band.
The tooth of such a wheel.
A placeholder name for an unnamed, unspecified, or hypothetical manufactured good or product.
A flared extension at the base of a sloped roof.
A flywheel, a weight attached to a spindle.
A circle of three or more leaves, flowers, or other organs, about the same part or joint of a stem.
A volution, or turn, of the spire of a univalve shell.
Any volution, as for example in the human ear or fingerprint.
Each circle, volution or equivalent in a pattern of concentric circles, ovals, arcs, or a spiral.
To form a pattern of concentric circles.