nail up


Also found in: Dictionary.

nail something up

 
1. to put something up, as on a wall, by nailing. Please nail this up. I'll nail up this picture for you.
2. to nail something closed; to use nails to secure something from intruders. Sam nailed the door up so no one could use it. Who nailed up the door? I can't get in!
See also: nail, up