Definition of baleen whale
: any of a suborder (Mysticeti) of usually large whales lacking teeth but having baleen which is used to filter chiefly small crustaceans (as krill) out of large quantities of seawater
First Known Use of baleen whale
Learn More about baleen whale
Britannica.com: Encyclopedia article about "baleen whale"
Seen and Heard
What made you want to look up baleen whale? Please tell us where you read or heard it (including the quote, if possible).