Origin: 1545–55; <
Spanish bacal(
l)
ao, probably <
Basque bakaiļao, perhaps, by metathesis, <
Gascon, the presumed source of
Old French cabellau, cabillau (
French cabillaud) fresh codfish, equivalent to
Gascon cabilh, cabelh (diminutive of
cap head;
see chief) + a suffix, alluding to the fish's prominent head; though
Medieval Latin (Flanders)
cabellauwus, the earliest attestation of the form (compare
Middle Dutch cab(
b)
eliau, Dutch kabeljauw) suggests a non-Rom, N European origin