(a.) Turning, as a wheel on its axis; as, rotary dial, a rotary engine\.

O-shaped alternate ambagious ascending axial back back-flowing backhanded backward beating carrefour circling circuitous circular circumgyratory circumvolutory cloverleaf crossing crosspoint crossroad crosswalk crossway cyclic cyclonic descending deviating deviative devious digressive discursive down-trending downward drifting epochal even every other excursive flowing fluent flying flyover going grade crossing gulfy gyral gyrational gyratory gyrostatic helical indirect intercrossing intermittent intersection isochronal level crossing meandering measured metronomic mounting oblique orbital oscillatory out-of-the-way overcrossing overpass passing periodical plunging progressive pulsing reciprocal recurrent recurring reflowing refluent regressive retrogressive rhythmic rising rotational rotatory round roundabout running rushing seasonal serial sideward sinking soaring spiral steady streaming swirly tornadic traffic circle trochilic undercrossing undulant undulatory up-trending upward vertiginous viaduct vortical wavelike wheeling whirlabout whirligig whirlwindish whirlwindy whirly