knife up

Meanings

1. To trim the edges on a boot or shoe of bits of leather, etc. that may be attached to the sides.
2. To trim with a knife.
3. To extract a morsel or dab (of something) with a knife.
4. To cut up or carve up with a knife.
5. To slice through; to cut or traverse a path through or between.
6. To penetrate sharply upward.
7. To move in a stabbing or penetrating manner
8. To traverse up the body in a quick stabbing sensation
9. To sit up or stand up suddenly.
10. To rise precipitously.