- Hair-root gland - small cavity on the body - A simple podlike pericarp which contains several seeds
and opens along the inner or ventral suture, as in the peony, larkspur
and milkweed. - A small cavity, tubular depression, or sac; as, a hair
follicle. - A simple gland or glandular cavity; a crypt. - A small mass of adenoid tissue; as, a lymphatic follicle.