Usage patterns
〈物〉に釘を打つto hammer a nail into something
I hammered a nail into the wooden board.
釘を抜くto pull out a nail
I pulled out the old nail with pliers.
釘に引っかかるto get caught on a nail
The hem of my clothes got caught on a nail.
Expressions
糠に釘having no effect; waste of effort 釘を刺すgive a warning; remind firmly; caution in advance 出る釘は打たれるthe nail that sticks out gets hammered down · tall trees catch much wind; excellence invites envy