The Collaborative International Dictionary of English v.0.48:

Asper \As"per\ ([a^]s"p[~e]r), a. [OE. aspre, OF. aspre, F.
   [^a]pre, fr. L. asper rough.]
   Rough; rugged; harsh; bitter; stern; fierce. [Archaic] "An
   asper sound." --Bacon.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Asper \As"per\ ([a^]s"p[~e]r), n. [L. spiritus asper rough
   breathing.] (Greek Gram.)
   The rough breathing; a mark ([asper]) placed over an initial
   vowel sound or over [rho] to show that it is aspirated, that
   is, pronounced with h before it; thus "ws, pronounced h[=o]s,
   "rh`twr, pronounced hr[=a]"t[=o]r.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Asper \As"per\, n. [F. aspre or It. aspro, fr. MGr. 'a`spron,
   'a`spros, white (prob. from the whiteness of new silver
   coins).]
   A Turkish money of account (formerly a coin), of little
   value; the 120th part of a piaster.
   [1913 Webster]

WordNet (r) 3.0 (2006):

asper
    n 1: 20 aspers equal 1 kurus in Turkey