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

PHRASES

pin sth in place

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