grating 1
/gray"ting/ , n.
1. a fixed frame of bars or the like covering an opening to exclude persons, animals, coarse material, or objects while admitting light, air, or fine material.
2. Physics. See diffraction grating .
[ 1605-15; GRATE 1 + -ING 1 ]
grating 2
— gratingly , adv.
/gray"ting/ , adj.
1. irritating or unpleasant to one's feelings.
2. (of a sound or noise) harsh, discordant, or rasping.
[ 1555-65; GRATE 2 + -ING 2 ]