The Collaborative International Dictionary of English v.0.48:

Talapoin \Tal"a*poin\ (t[a^]l"[.a]*poin), n. (Zool.)
   A small African monkey (Cercopithecus talapoin or
   Miopithecus talapoin) -- called also melarhine.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Talapoin \Tal"a*poin\ (t[a^]l"[.a]*poin), n. [Pg. talapoi,
   talapoin, name for Buddhist priest, fr. Siamese t`ama
   p`r[a^]; t`ama, honorific title + p`r[a^] priest.]
   A Buddhist monk or priest. [Ceylon & Indo-China]
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

talapoin
    n 1: smallest guenon monkey; of swampy central and west African
         forests [syn: talapoin, Cercopithecus talapoin]