- See baleen whale.
- some of the baleen whales (of suborder Mysticeti)
- Any right whale, or whalebone whale. See cetacea.
- A suborder of Cete or Cetacea, having no teeth created, the top of jaw being given baleen plates; the balænoid whales or whalebone-whales: against Denticete.
- Having baleen in the place of teeth inside top jaw; of the Mysticete.