The Collaborative International Dictionary of English v.0.48:

Holm \Holm\ (h[=o]m; 277), n. [OE., prob. from AS. holen holly;
   as the holly is also called holm. See Holly.] (Bot.)
   A common evergreen oak, of Europe (Quercus Ilex); -- called
   also ilex, and holly.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ilicic \I*lic"ic\, a. [L. ilex, ilicis, holm oak.]
   Pertaining to, or derived from, the holly (Ilex), and
   allied plants; as, ilicic acid.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ilex \I"lex\, n. [L., holm oak.] (Bot.)
   (a) The holm oak (Quercus Ilex).
   (b) A genus of evergreen trees and shrubs, including the
       common holly.
       [1913 Webster]

WordNet (r) 3.0 (2006):

Ilex
    n 1: a large genus of dicotyledonous trees and shrubs of the
         family Aquifoliaceae that have small flowers and berries
         (including hollies) [syn: Ilex, genus Ilex]