noun Download 🔗Share A small nocturnal insect (Cimex lectularius), of the family Cimicidae, that feeds on the blood of humans and other warm-blooded hosts. Examples : "The student woke up with itchy bites all over their arms and legs; bedbugs were infesting their dorm room. " insect animal biology organism medicine disease body Chat with AIVocabulary GamePractice Reading