sei (whale)sei whale
a rorqual (Balaenoptera borealis) with a light-gray or bluish back, found in all seas
Origin of sei (whale)Norwegian seihval from sei, coalfish + hval, whale: from its arrival at fishing grounds with the coalfish
A baleen whale (Balaenoptera borealis) having a grayish body with a whitish underside, a curved dorsal fin, and grooves on the throat.
Origin of sei whalePartial translation of Norwegian seihval ; see sei .
Adapted from Norwegian seihval, with the second half translated.