Akk. ūsu ‘duck’. A widely attested cultural term with no certain etymology (cf. SED II No. 22), Akkadian loanword in Ugaritic is unprovable (Kogan 2015: 358).
neither cognate nor loan relationship with Akk. abukkatu ‘a plant’ (CAD A₁ 81) carries conviction in view of Ugr. ˁ vs. Akk. a- (Pardee 1985:67) (Kogan 2015: 360).