|baleen (bə-lēn') Pronunciation Key
A flexible horny substance hanging in fringed plates from the upper jaw of baleen whales. It is used to strain plankton from seawater when feeding. Also called whalebone.
series of stiff keratinous plates in the mouths of baleen whales, used to strain plankton from seawater. Whalebone was once important in the production of corsets, brushes, and other goods
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