crevasses Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. deep, narrow openings or cracks, especially in ice. Example Sentence The mountaineer carefully navigated around the dangerous crevasses on his ascent. Synonyms fissures; chasms; gaps Antonyms plateaus; plains Hear It! Say It! Write It! crevasses Switch to cursive Start Share with your friends: