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.
The term sigil derives from the Latin sigillum, meaning seal, though it may also be related to the Hebrew ×¡×××× (segula meaning word, action, or item of spiritual effect, talisman). The current use of the term is derived from Renaissance magic, which was in turn inspired by the magical traditions of antiquity.