louse

nouns

wingless usually flattened bloodsucking insect parasitic on warm-blooded animals

louse, sucking louse

is derived from

a person who has a nasty or unethical character undeserving of respect

dirt ball, insect, louse, worm

any of several small insects especially aphids that feed by sucking the juices from plants

louse, plant louse

is derived from

wingless insect with mouth parts adapted for biting; mostly parasitic on birds

bird louse, biting louse, louse

is derived from