Longman Dictionary of Contemporary English - below

~1 prep 1 in a lower place or position than, or on a lower level than  (I'd like you to trim my hair just below the ears. | Fish were swimming below the surface of the water.)  (- see under1) 2 less than a particular number, amount, level etc  (These families are living below the official poverty line. | Bank charges rose at a level slightly below that of inflation. | well/way below (=very much lower than))  (Sales figures for January were well below target. | below average (=not as good as the normal standard))  (Tom's spelling is well below average. | below freezing (=if the temperature is below freezing it is less than zero degrees)) 3 in a lower, less important job than someone else  (A captain is below a general.) ~2 adv 1 in a lower place or position, or on a lower level  (We looked down from the mountain at the valley below. | Jim lives on the fourth floor and Jean-Pierre is on the floor below.) 2 on the lower level of a ship or boat  (The Captain told the crew to go below.) 3 less than a particular number, age, price etc  (Children of three and below pay half fare.) 4 10/15/20 below etc if a temperature is 10, 15, 20 below etc, it is that number of degrees lower than zero 5 mentioned or shown lower on the same page or on a later page  (See p.85 below. | The information below was compiled by our correspondent.) 6 in a lower, less important rank or job  (officers of the rank of captain and below) 7 literary on Earth rather than in Heaven