旋转灯

Revolving \Re*volv"ing\, a.
Making a revolution or revolutions; rotating; -- used also
figuratively of time, seasons, etc., depending on the
revolution of the earth.

But grief returns with the revolving year. --Shelley.

Revolving seasons, fruitless as they pass. --Cowper.

{Revolving firearm}. See {Revolver}.

{Revolving light}, a light or lamp in a lighthouse so
arranged as to appear and disappear at fixed intervals,
either by being turned about an axis so as to show light
only at intervals, or by having its light occasionally
intercepted by a revolving screen.