Amharic

bərakkʷa - shoulder blade, bone of a cow’s foreleg (AED 886)

With labialization of -kk- under the influence of b-? While the first meaning rather relates to ‘chest’, the second may continue *bi/ark- ‘knee’ as well.

PWS

*barak- - chest, thorax (SED I No. 38)

Rather to be separated from *bi/ark- ‘knee’ (SED I No. 39). Note Akk. ‘lap’ in birku, burku [CAD b 255] given as a second meaning; this rather developed from the main meaning ‘knee’ (see *bi/ark- ‘knee’), though it may also ensue from Sem. *barak- ‘chest’.