A board foot is one foot long, one foot wide and one inch in thickness. Checking the Waste Mary Huston Gregory This is usually expressed in pounds per thousand board feet, a board foot being considered as one-twelfth of a cubic foot.
Sibilance is a manner of articulation of fricative and affricate consonants, made by directing a stream of air with the tongue towards the sharp edge of the teeth, which are held close together; a consonant that uses sibilance may be called a sibilant, or a strident.
Noun. 1. sibilant-a consonant characterized by a hissing sound (like s or sh). sibilant consonant. fricative, fricative consonant, spirant-a continuant consonant produced by breath moving against a narrowing of the vocal tract.