WordNet sense 1 (Scottish botanist who first observed the movement of small particles in fluids now known a Brownian motion (1773-1858)):

Robert Brown

WordNet sense 2 (abolitionist who was hanged after leading an unsuccessful raid at Harper's Ferry, Virginia (1800-1858)):

John Brown

WordNet sense 3 (an orange of low brightness and saturation):

brownness

WordNet sense 4 (a university in Rhode Island):

Brown University

WordNet sense 5 (of a color similar to that of wood or earth):

brownish, dark-brown, chocolate-brown

WordNet sense 6 (being or having or characterized by hue):

chromatic

WordNet sense 7 ((of skin) deeply suntanned):

browned

WordNet sense 8 (marked by dark or relatively dark pigmentation of hair or skin or eyes):

brunet