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. The definition of sibilant is a hissing sound, or a consonant that makes such a sound. The ssh sound is an example of something that would be described as a sibilant. Sibilant is a consonant or a speech sound characterized by a hissing sound.