Proto-West-Caucasian: *xʷa
Meaning: 1 vein, blood vessel 2 marrow 3 shin, shin-bone
Abkhaz: a-š́a-χʷá 2
Abaza: š́a-χʷa 3
Adyghe: fa 1
Kabardian: xʷa 1
Ubykh: xa 1
Comments: PAT *xʷa in compounds with *š́a 'foot, leg' and *ma 'hand, arm': *š́a-xʷa > Abkh. a-š́a-χʷá 'marrow', a-š́a-χʷá-r 'metatarsus', Bzyb. a-š́a-xʷá-r 'metatarsus, marrow in metatarsus bone; leg (from pelvis to knee)'; *ma-xʷa > Bzyb. a-ma-xʷá-r 'arm (from elbow to hand)'. The meaning of *xʷa may be reconstructed as "bone from one joint to another" < "joint" < "sinew". PAK *xʷa.
See Климов 1967.
