nail
 
 
 
nail
 (nāl) noun
1.
	A slim, pointed piece of metal hammered into material as a fastener. 
2.
	a. A fingernail or toenail. b. A claw or talon.
3.	Something resembling a nail in shape, sharpness, or use. 
4.	A measure of length formerly used for cloth, equal to 1/16 yard (5.7 cm). 
verb
, transitive
nailed, nailing, nails
1.
	To fasten, join, or attach with or as if with a nail. 
2.
	To cover, enclose, or shut by fastening with nails: nail up a window. 
3.
	To keep fixed, motionless, or intent: Fear nailed me to my seat. 
4.
	Slang. a. To stop and seize; catch: Police nailed the suspect. b. To detect and expose: nailed the senator in a lie; nail corruption before it gets out of control.
5.	Slang. a. To strike or bring down, especially with something shot or hurled: nail a bird in flight. b. To gain thorough understanding of; master: a brilliant student who nailed all her courses in thermodynamics.
6.	Baseball. To put out (a base runner). 
 
phrasal verb.
nail down
1.
	To discover or establish conclusively: nailed down the story by checking all the facts. 
2.
	To win: nailed down another victory in the golf tournament. 
 
 
[Middle English, from Old English 
nægl, fingernail, toenail.]
 nail
ʹer noun