From Longman Dictionary of Contemporary Englishknock-kneedˌknock-ˈkneed adjective MIhaving knees that point slightly inwards → bow-legged
Examples from the Corpus
knock-kneed• Whoever placed her feet, in their unfashionable lace-up shoes, left one askew, giving her a knock-kneed appearance.• He had a curious knock-kneed kind of walk that seemed to send him bumping into things all the time.• Records get knocked out in the studio hastily, emerge knock-kneed, spindly, pallid and monochrome. 