yellowjacket Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. small yellowmarked social wasp commonly nesting in the ground Example Sentence The yellowjacket stung him. Spelled as one word. Synonyms yellow hornet; Vespula maculifrons; wasp Antonyms flower Hear It! Say It! Write It! yellowjacket Switch to cursive Start Share with your friends: