key board Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. the row or set of keys on a piano or organ or typewriter or typesetting machine or computer or the like;verb. enter information into a computer Example Sentence My key board is broken. Spelled as two words. Synonyms keyboard; piano keys; set of keys on a computer Antonyms monitor Hear It! Say It! Write It! key board Switch to cursive Start Share with your friends: