A baleen whale,
The keratinous material that makes up the plates in the mouth of the baleen whale, Mysticeti, which it uses to trap its food; formerly used in corsetry.
A whale (Physeter catodon, syn. Physeter macrocephalus), the largest of the toothed whales.
Any whale in the superfamily Physeteroidea, which also includes the small whales of genus Kogia.