The Collaborative International Dictionary of English v.0.48:

Loquat \Lo"quat\, n. [Chinese name.] (Bot.)
   The fruit of the Japanese medlar (Photinia Japonica). It is
   as large as a small plum, but grows in clusters, and contains
   four or five large seeds. Also, the tree itself.
   [1913 Webster]

WordNet (r) 3.0 (2006):

loquat
    n 1: evergreen tree of warm regions having fuzzy yellow olive-
         sized fruit with a large free stone; native to China and
         Japan [syn: loquat, loquat tree, Japanese medlar,
         Japanese plum, Eriobotrya japonica]
    2: yellow olive-sized semitropical fruit with a large free stone
       and relatively little flesh; used for jellies [syn: loquat,
       Japanese plum]