chelae Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition plural noun. the pincer-like appendages of crustaceans or arachnids. Example Sentence The lobster uses its chelae to catch and eat its prey. More Example Sentences Chelae help the lobster hold onto prey. Synonyms claw; pincer; appendage Antonyms body; torso Hear It! Say It! Write It! chelae Switch to cursive Start Share with your friends: