針で親指を突いてしまった。

needle; pin; hook; stinger; thorn; hand (e.g. clock, etc.); pointer; staple (for a stapler); needlework; sewing; malice; counter for stitches

indicates location of action; at; in; indicates time of action; indicates means of action; cause of effect; by; and then; so; indicates continuing action; indicates certainty, emphasis, etc.

thumb

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to prick; to stab; to poke; to prod; to push; to thrust; to nudge; to hit; to strike; to use (a cane); to prop oneself up with; to press against (the floor, etc.); to attack; to brave (the rain, etc.)