To blow or sound a horn; to make similar noise by contact of the tongue with the root of the upper teeth at the beginning and end of the sound; also, to give forth such a sound, as a horn when blown.
The surface roughness of a paint film, which has coarse or abrasive pigment. Such a surface is very suitable for rubbing and gives good adhesion to paints put on to it, but is not a good topcoat.