The Collaborative International Dictionary of English v.0.48:

Diervilla \Diervilla\ n.
   small genus of low deciduous shrubs; the bush honeysuckles.

   Syn: genus Diervilla.
        [WordNet 1.5] Diesel engine
        Diesel

WordNet (r) 3.0 (2006):

Diervilla
    n 1: small genus of low deciduous shrubs: bush honeysuckles
         [syn: Diervilla, genus Diervilla]