alp

noun2

1. •
   A very high mountain. Specifically, one of the Alps, the highest chain of mountains in Europe.

   • Nor breath of Vernal Air from snowy Alp. — 1671
2. •
   An alpine meadow.

   • At the alp of Khyarkuti, a wide flat at the junction of several glens[…] — 1942

noun3

1. •
   Initialism of alkaline phosphatase.
2. •
   Initialism of axion-like particle.
3. •
   Initialism of arm's length principle.