pillars Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. 1 a tall cylindrical vertical upright and used to support a structure; 2 a fundamental principle or practice; 3 a prominent supporter Example Sentence The hall was surrounded by stone pillars. Synonyms column; tower; pedestal Antonyms roof Hear It! Say It! Write It! pillars Switch to cursive Start Share with your friends: