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.
noun. 1  1A shared supply of vehicles or resources to be drawn on when needed. âa car poolâ. 2  2mass noun A game played on a small billiard table using two sets of seven coloured and numbered balls together with one black ball and a white cue ball, with the aim of pocketing all one's own balls and then the black.