Coracias benghalensis, a bird that occurs widely from West Asia to the Indian subcontinent.

plural of roller sport

plural of roller bottle

Synonym of roller sledge hockey

(field hockey or ice hockey) A parasport, an adapted form of roller hockey, and a floor version of (ice) sledge hockey, where disabled athletes rid atop roller sledges (roller sleds), and propel themselves with a pair of roller sledge hockey sticks, that function as canes/"walking sticks" and hockey sticks. Various variants of roller sledge hockey use different configurations of wheels.

plural of roller-cone bit

Alternative spelling of roller cone bit

A type of drill bit used to perforate rock to create a wellbore to oil and gas reservoirs

plural of roller cone bit