dibs
From Longman Dictionary of Contemporary Englishdibsdibs /dɪbz/ noun [plural] American English informal OWNthe right to have, use, or do something Freshmen have first dibs on dormitory rooms.Examples from the Corpusdibs• Cablevision might have first dibs on buying the rest of the property.have first dibs on• Cablevision might have first dibs on buying the rest of the property.Origin dibs (1800-1900) Probably from dibstones “game played with small stones”, from dib “to hit lightly” ((17-19 centuries))