Answer: whalebones

AnswerCrossword Clue
WHALEBONESOld collar stiffeners
whalebonesWHALEBONE, a light flexible substance consisting of the baleen plates of whales
whalebonesBone or ivory from a whale or walrus
whalebonesStrips of this substance, much used formerly as stays in corsets and dresses
whalebonesAn elastic horny substance that grows in a series of thin parallel plates in the upper jaw of some whales and is used by them to strain plankton from the seawater