[1] : The Collaborative International Dictionary of English v.0.48

tarragon \tar"ragon\, n. sp. taragona, ar. tarkh?n; perhaps
   fr. gr. ? a dragon, or l. draco; cf. l. dracunculus tarragon.
   cf. dragon. bot.
   a plant of the genus artemisa artemisa dracunculus,
   much used in france for flavoring vinegar.
   1913 webster
see also:
dragon artemisa artemisa dracunculus 

[2] : WordNet (r) 2.0

tarragon
     n 1: aromatic perennial of southeastern russia syn: estragon,
          artemisia dracunculus
     2: fresh leaves or leaves preserved in vinegar used as
        seasoning syn: estragon
see also:
estragon artemisia dracunculus 

Tarragon >> T Words
Tarragon, definition of term: Tarragon
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