1. (noun) The feeling one has after staying awake far too late doing nothing productive and knowing all the while that one is doing nothing productive. Similar to, and can overlap with, a hangover, but usually slap-happier.

2. (interjection) Rhymes with silver.

When you eat dirt for the first time and leave your family to build a shack in the woods

adj.
to steal from your friends, usually done by someone you don`t know that well. an act of betrayal, usually small in scale

Vulgar bright purple with shiney silver stripes.

To be given something you don't care for. Other contexts would be pilvering or pilvered.

Pilver: <verb>

The act of hitting somone on the shoulder with your head.
also /pilvered/pilvering