louse
- n wingless usually flattened bloodsucking insect parasitic on warm-blooded animals
- n a person who has a nasty or unethical character undeserving of respect
- n any of several small insects especially aphids that feed by sucking the juices from plants
- n wingless insect with mouth parts adapted for biting; mostly parasitic on birds
louse fly
- n bloodsucking dipterous fly parasitic on birds and mammals
lousiness
- n infestation with lice (Pediculus humanus) resulting in severe itching
- n the quality of being disgusting to the senses or emotions
louvar
- n large silvery fish found worldwide in warm seas but nowhere common; resembles a whale and feeds on plankton
louver
- n one of a set of parallel slats in a door or window to admit air and reject rain