Noun

1. A wooden pin pushed or driven into a surface
2. Small markers inserted into a surface to mark scores or define locations etc.
3. Informal terms for the leg
4. A prosthesis that replaces a missing leg
5. Regulator that can be turned to regulate the pitch of the strings of a stringed instrument
6. A holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing

Verb

1. Succeed in obtaining a position
2. Pierce with a wooden pin or knock or thrust a wooden pin into
3. Fasten or secure with a wooden pin
4. Stabilize (the price of a commodity or an exchange rate) by legislation or market operations