n. the depth to which something penetrates (especially the depth reached by a projectile that hits a target)

n. the act (by a man) of inserting his penis into the vagina of a woman

n. clear or deep perception of a situation

n. ability to apply knowledge or experience or understanding or common sense and insight

n. the ability to comprehend; to understand and profit from experience

n. unusual mental ability

n. intelligence manifested by being astute (as in business dealings)

n. shrewdness shown by keen insight