The Collaborative International Dictionary of English v.0.48:

Alp \Alp\, n.
   A bullfinch. --Rom. of R.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Alp \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.
      [1913 Webster]

            Nor breath of vernal air from snowy alp. --Milton.
      [1913 Webster]

            Hills peep o'er hills, and alps on alps arise.
                                                  --Pope.
      [1913 Webster]

   2. Fig.: Something lofty, or massive, or very hard to be
      surmounted.
      [1913 Webster]

   Note: The plural form Alps is sometimes used as a singular.
         "The Alps doth spit." --Shak.
         [1913 Webster]

WordNet (r) 3.0 (2006):

alp
    n 1: any high mountain

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ALP
       Access Linux Platform (Linux, PDA, Palm)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ALP
       Assembly Language Processor (IBM)


The Free On-line Dictionary of Computing (30 December 2018):

ALP

    A list processing extension of Mercury
   Autocode.

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

   (1995-01-24)