flour mill Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a place where grain is ground into flour. Example Sentence The miller poured the grain into the flour mill. Spelled as two words. More Example Sentences The flour mill produces fresh flour daily. Synonyms gristmill; milling plant; flour factory Antonyms wheat Hear It! Say It! Write It! flour mill Switch to cursive Start Share with your friends: