Search Result for "aculeus": 
Wordnet 3.0

NOUN (2)

1. a stiff sharp-pointed plant process;

2. a sharp-pointed process especially a sting of a hymenopterous insect; 



The Collaborative International Dictionary of English v.0.48:

Aculeus \A*cu"le*us\, n.; pl. Aculei. [L., dim. of acus
   needle.]
   1. (Bot.) A prickle growing on the bark, as in some brambles
      and roses. --Lindley.
      [1913 Webster]

   2. (Zool.) A sting.
      [1913 Webster]


WordNet (r) 3.0 (2006):

aculeus
    n 1: a stiff sharp-pointed plant process
    2: a sharp-pointed process especially a sting of a hymenopterous
       insect