Morpheme
Buck
Type
free base
Denotation
male animal, man; bend, buckle, spring, lurch, resist
Etymology
Middle English bukke, bucke, buc; Old English buc, bucc, bucca
Evidence
blackbuck, buck, buckberry, buckboard, buckbrush, bucked, buckeen, bucker, buckhorn, buckhound, bucking, buckish, buckism, buckjumper, bucko, bucks, bucksaw, buckshot, buckskin, buckskinned, bucksome, bucksow, buckstay, bucktail, buckteeth, buckthorn, bucktooth, bucktoothed, bushbuck, crossbuck, humbucker, killbuck, prongbuck, reedbuck, roebuck, sawbuck
Notes
buckaroo and vaquero are doublets
roebuck and rhebok are doublets