Noun

1. Loss of air pressure in a tire when a hole is made by some sharp object
2. A small hole made by a sharp object
3. The act of puncturing or perforating

Verb

1. Pierce with a pointed object; make a hole into
2. Make by piercing
3. Reduce or lessen the size or importance of
4. Cause to lose air pressure or collapse by piercing
5. Be pierced or punctured