louse (
http://definr.com/louse)
n 1: wingless usually flattened blood-sucking insect parasitic on
warm-blooded animals [syn:
sucking louse]
2: has a nasty or unethical character undeserving of respect
[syn:
worm,
insect,
dirt ball]
3: any of several small insects especially aphids that feed by
sucking the juices from plants [syn:
plant louse]
4: wingless insect with mouth parts adapted for biting; mostly
parasitic on birds [syn:
bird louse,
biting louse]