Proto-Baltic: *kaûš-a- (2) c., *kaũš- vb. tr., *kauš-ia- (2) c., *keûš-ia- c., -iā̃ f.
Meaning: skull, vessel
Lithuanian: káuša-s `Hirnschädel, Schöpflöffel, Muschelschale, Schneckenhäuschen', kaũšti `aushöhlen, kiáuša-s, kiáušē `Hirnschädel', pakáušis, gen. -iō `(Hinter)kopf, Schädel'; kiaũši-s `Ei'
Lettish: kaûss (/ kàuss2 Mar. n. RKr. XVII, 104) `Schädel, Hirnschale; grösseres Gefäss, Trinkgefäss; Schale, Napf, Becken; Kochlöffel, Löffel', pakaûsis (/ pakàusis2 Heidenfeld), pakause `Nacken, Genick; Schädel'
Proto-IE: *kauk'-
Meaning: a k. of vessel
Old Indian: kóśa- 'cask, vessel, pail, bucket, sheath', kośaka- m. (L.) `egg, testicle'
Latin: caucum, -ī n. `Becher'
Russ. meaning: вид сосуда
References: WP II 546 f, WH (different in Pok.)
Comments: Cf. (for Balt) *kawǝs- 609.