LOUSE

Definition

1. noun wingless usually flattened bloodsucking insect parasitic on warm-blooded animals. — synonyms: sucking_louse
2. noun a person who has a nasty or unethical character undeserving of respect. — synonyms: worm, insect, dirt_ball
3. noun any of several small insects especially aphids that feed by sucking the juices from plants. — synonyms: plant_louse
4. noun wingless insect with mouth parts adapted for biting. — synonyms: bird_louse, biting_louse