Entry 1 sense Webster, 1913 Tarragon · Tar·ra·gon · IPA /ˈtæɹəɡɑn/ 01 n. A plant of the genus Artemisa (Artemisa dracunculus), much used in France for flavoring vinegar. 1. A plant of the genus Artemisa (Artemisa dracunculus), much used in France for flavoring vinegar.(Bot.)