baleen
Baleen (noun) means the hard, comb-like material that hangs from the upper jaw of certain whales and is used to filter food from water; it was once used to stiffen corsets.
Etymology
This word came into English as Middle English baleyne, taken from Old French baleine (“whale, whalebone”), which itself came from Latin balaena (“whale”), traced back to Ancient Greek φάλαινα (phálaina, “whale”).