1
a
: turning on an axis like a wheel
b
: taking place about an axis
rotary motion
2
: having an important part that turns on an axis
rotary cutter
3
: characterized by rotation
4
: of, relating to, or being a press in which paper is printed by rotation in contact with a curved printing surface attached to a cylinder
plural rotaries
1
: a rotary machine
2
: a road junction formed around a central circle about which traffic moves in one direction only
called also circle, traffic circle
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Merriam-Webster unabridged
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