The Collaborative International Dictionary of English v.0.48:

Nectary \Nec"ta*ry\, n.; pl. Nectaries. [From Nectar: cf. F.
   nectaire.] (Bot.)
   That part of a blossom which secretes nectar, usually the
   base of the corolla or petals; also, the spur of such flowers
   as the larkspur and columbine, whether nectariferous or not.
   See the Illustration of Nasturtium.
   [1913 Webster]