ROTARY
circular, rotary, orbitual
(adjective) describing a circle; moving in a circle; “the circular motion of the wheel”
rotary
(adjective) relating to or characterized by rotation; “rotary dial”
Source: WordNet® 3.1
Etymology
Adjective
rotary (not comparable)
Capable of rotation.
Noun
rotary (plural rotaries)
(New England) A traffic circle.
(mostly, with initial capital) Any of the clubs making up the international Rotary International movement for community service.
Source: Wiktionary
Ro"ta*ry, a. Etym: [L. rota a wheel. See Roll, v., and cf. barouche,
Rodomontade, Roué, Round, a., Rowel.]
Definition: Turning, as a wheel on its axis; pertaining to, or resembling,
the motion of a wheel on its axis; rotatory; as, rotary motion.
Rotary engine, steam engine in which the continuous rotation of the
shaft is produced by the direct action of the steam upon rotating
devices which serve as pistons, instead of being derived from a
reciprocating motion, as in the ordinary engine; a steam turbine; --
called also rotatory engine.
– Rotary pump, a pump in which the fluid is impelled by rotating
devices which take the place of reciprocating buckets or pistons.
– Rotary shears, shears, as for cloth, metal, etc., in which
revolving sharp-edged or sharp-cornered wheels do the cutting.
– Rotary valve, a valve acting by continuous or partial rotation,
as in the four-way cock.
Source: Webster’s Unabridged Dictionary 1913 Edition