krummhorn, krumhorn or crumhorn /krŭmˈhörn/

1. An old double-reed wind instrument with a curved end
2. An organ reed stop

• off the charts
• off the cuff
• off the face
• off the grid
• off the ground
• off the hinges
• off the hook
• off the hooks
• off-the-job training
• off the map
• off the mark
• off the peg
• off-the-peg
• off the rails
• off the record
• off-the-record
• off the reel
• off the shelf
• off-the-shelf
• off the shoulder
• off the top of one's head
• off the track
• off the wagon
• off the wall
• off-ward