(cycling) To match the pace of riders who are setting the tempo.

(cycling) To maintain a distance of half a wheel in front of another rider, regarded as poor etiquette.

prayer wheel

(horology) The wheel of an escapement.

A press by which railway-car wheels are forced on, or off, their axles.

(US) Any assassin bug of the genus Arilus, large true bugs with wheel-shaped pronotal armor. They are predators upon soft-bodied insects.

(engineering) A form of cam shaped like a heart, used to convert uniform rotary motion into uniform reciprocating motion.

A variety of bournonite with wheel-shaped twin crystals.

A stitch resembling a spider's web, worked into the material, and not over an open space.

Any sea urchin of the genus Rotula having a round, flat shell; a type of sand dollar.