1. \Alp\, n. [L. Alpes the Alps, said to be of Celtic origin;
   cf. Gael. alp a high mountain, Ir. ailp any huge mass or
   lump: cf. F. Alpes.]
   1. A very high mountain. Specifically, in the plural, the
      highest chain of mountains in Europe, containing the lofty
      mountains of Switzerland, etc.
            Nor breath of vernal air from snowy alp. --Milton.
            Hills peep o'er hills, and alps on alps arise.
                                                  --Pope.
   2. Fig.: Something lofty, or massive, or very hard to be
      surmounted.
   Note: The plural form Alps is sometimes used as a singular.
         ``The Alps doth spit.'' --Shak.
   

2. \Alp\, n.
   A bullfinch. --Rom. of R.
   

A list processing extension of Mercury Autocode.

["ALP, An Autocode List-Processing Language", D.C. Cooper et al, Computer J 5:28-31, 1962].

Normal range: 50-190 IU/L; in children it can be up to 300 IU/L