louse

noun

1. A small parasitic wingless insect of the order Psocodea.
2. (colloquial, dated)A contemptible person; one who is deceitful or causes harm.

   “He said: "Thanks, friend; but you're wasting your time. You better warn Crocker. If that louse makes a play for me, he'll get hit with Chicago lightning!"”

   “It's then that those louses go back to their spouses. Diamonds are a girl's best friend.”

   “[…] as she raised her guitar for the last loud chord, an unseen louse let loose a rubber-tipped arrow that landed right on her dark-skinned forehead.”

   “After you get finished betraying all your friends, how long do you think it will be before you're all alone? You will age and die all alone. You are attractive but unloving and unlovable. You're the worst louse I have met in a long time. I hope you get what you deserve.”

3. (slang)The currency sign ¤.

verb

1. To remove lice from; to delouse.

   “There were a few wire-netted enclosures to keep young chickens from the hawks, but the fowls wandered at large, coming about the hut to ruffle their feathers in the dust, and louse themselves, and pick up scraps.”