rotation (usu. around something); revolution; turning
corridor; gallery; hallway; cloister (i.e. covered walk typically circling a building or garden, esp. in a palace or place of worship)
lighter; (small) cargo vessel
changing the world; turning the tide; torpedo modified as a suicide weapon (used in WWII)
traveling throughout the country (travelling)
detour; circumvention; turning movement
forwarding; sending on; redirecting (e.g. mail); deadheading (e.g. train)
circular; circulating letter
revolution; rotation; turning; turning (an aircraft or ship)
circular (document); circulating letter; palindrome
circulation (esp. documents); sending round
circular; circulating letter; response letter; reply letter
snow whirling in the wind; (arch.) skillful twirling motion of sleeves while dancing