one thousand Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. the number following nine hundred ninety-nine. Example Sentence He is trying to save one thousand dollars for a new camera. More Example Sentences One thousand is a big number to count. Synonyms 1000; thousand; grand Hear It! Say It! Write It! one thousand Switch to cursive Start Share with your friends: