1.
relating to or characterized by rotation
rotary dial
2.
marked by or moving in a circle
'rotary' - used as a noun
3.
a road junction at which traffic streams circularly around a central island
the accident blocked all traffic at the rotary
4.
electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa
In the 1940s, the FCC assigned television's Channel 1 to mobile Services
(two-way radios in taxicabs, for instance) but did not re-number the
other
channel assignments. That is why your TV set has channels 2 and up, but
no
channel 1.