ADV
- carefully
- She carefully pinned the two pieces of cloth together
- firmly
- back, on, together, up
- Her hair was pinned back. pictures pinned up on the walls
PREP
- onto
- The poster had been pinned onto a large wooden board
- to
- Maps were pinned to the walls
ADV
- helplessly
- down
- He was pinned down on the floor
- precisely
- The difference between the two approaches is hard to pin down precisely
PREP
- against
- He pinned her against the wall
- behind
- His arms were pinned behind his back
- to
- She was pinned helplessly to the desk
- PHRASAL VERBS pin sth down
VERB + PIN
- be difficult to, be hard to