grat·ing 
(grātĭng)
(grātĭng)n.
1. A grill or network of bars set in a window or door or used as a partition; a grate.
2. A diffraction grating.
- hit the booze
- hit the bottle
- hit the bottle/booze/sauce
- hit the bricks
- hit the ceiling
- hit the deck
- hit the fan
- hit the ground running
- hit the hay
- hit the hay/sack
- hit the high points
- hit the high points/spots
- hit the high spots
- hit the jackpot
- hit the nail on the head
- hit the road
- hit the roof
- hit the roof/ceiling
- hit the sack
- hit the sauce
- hit the spot
- hit the wall
- Hittite
- hit up
- HIV