Any of several plants, of the genus Bidens, having yellow flowers and prickly fruit. / The barbed fruit of these plants, which sticks to clothing and to animal fur.

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(organic chemistry) The xanthophyll (1R,2R)-4-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-18-[(4R)-4-hydroxy-2,6,6-trimethylcyclohexen-1-yl]-3,7,12,16-tetramethyloctadeca-1,3,5,7,9,11,13,15,17-nonaenyl]-3,3,...

plural of coolibah