bone lacuna a small cavity within the bone matrix, containing an osteocyte, and from which slender canaliculi radiate and penetrate the adjacent lamellae to anastomose with the canaliculi of neighboring lacunae, thus forming a system of cavities interconnected by minute canals.owship's lacuna. the concave cavities which are formed by osteoclasts in the process of bone resorption. osseous lacuna. bone lacuna (see above). osteocytic lacuna. see bone lacuna (above). urethral lacuna. numerous small depressions or pits in the mucous membrane of the urethra. vascular lacuna.
a wagering pool that involves a sports event or contest, if the pool is conducted for profit, and (3) wagers placed in a lottery conducted for profit. See section 7.
Pocket billiards, most commonly called pool , is a form of billiards usually equipped with sixteen balls (a cue ball and fifteen object balls), played on a pool table with six pockets built into the rails, splitting the cushions.o rack is used in most carom billiards games. A triangular rack is used to arrange the object balls at the beginning of the games of eight-ball, straight pool, and many others, while a diamond-shaped rack is used in nine-ball.