*lVḫVm- - kind of large aquatic animal (SED II No. 145)

Akkadian

laḫmu - a mythical sea-monster (CAD L 41, AHw. 528)

See most recently Kogan 2011:212.

Arabic

luḫm- - species piscis marini, i.q. kawsay (Fr. IV 95, Dozy 2 531, TA 33 411–412)

Daṯ. laḫam ‘requin’ (GD 2625), Yem. luḫam, laḫam ‘shark’ (Piamenta 445).
See also Fronzaroli 1971: 615; SED II No. 145; Kogan 2011: 212

Mehri

əwḫáym - shark (ML 259)

ML 259: əwzáym — certainly a misprint for əwḫáym

Jibbali

lḫum - shark (JL 167)

Harsusi

léḫem - shark (HL 86)