grille

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A grating of metal, wood, or another material used as a screen, divider, barrier, or decorative element, as in a window or on the front end of an automotive vehicle.
2. n. An opening covered with a grating.

Century Dictionary and Cyclopedia

1. n. A piece of openwork or grating, usually of metal, as wrought-iron. Specifically— When ornamental in character, an arrangement of bars forming a decorative design.
2. n. A grating serving as a gate; also, a metallic grating closing a small opening, as in a door, allowing an inmate to answer inquiries and examine applicants for admission without opening the door.
3. n. The large grating separating a convent parlor into two parts, visitors being allowed only on one side of it.
4. n. In pisciculture, an apparatus for holding fish-eggs during incubation, consisting of a rectangular wooden frame 20 inches long and from 7 to 8 inches wide, into which are fastened small cylindrical glass tubes, closely placed. When in use, these grilles are placed in a series of rectangular boxes (a grille in each box) arranged in flights, so that the water passes readily from the highest through the intervening ones to the lowest. The water enters from the top near one corner, and after passing through the box goes out through the spout at the diagonally opposite corner.
5. In lace, having a background consisting of bars or brides crossing open spaces: also said of the background itself.

Wiktionary

1. n. Obsolete spelling of grill.

GNU Webster's 1913

1. adj. A lattice or grating.

WordNet 3.0

1. n. small opening (like a window in a door) through which business can be transacted
2. n. grating that admits cooling air to car's radiator
3. n. a framework of metal bars used as a partition or a grate