Origin: 1545–55; < Sp
bacal(
l)
ao, prob. < Basque
bakaiļao, perh., by metathesis, < Gascon, the presumed source of OF
cabellau, cabillau (F
cabillaud) fresh codfish, equiv. to Gascon
cabilh, cabelh (dim. of
cap head;
see chief ) + a suffix, alluding to the fish's prominent head; though ML (Flanders)
cabellauwus, the earliest attestation of the form (cf. MD
cab(
b)
eliau, D
kabeljauw) suggests a non-Rom, N European origin
