D defs.my
Entry 2 senses Webster, 1913

Wormwood

/wẽrm'-wo͝odˌ/ · Worm·wood · IPA /ˈwɚm.wʊd/
01 n. A composite plant (Artemisia Absinthium), having a bitter and slightly aromatic taste, formerly used as a tonic and a vermifuge, and to pro…
  1. 1.
    A composite plant (Artemisia Absinthium), having a bitter and slightly aromatic taste, formerly used as a tonic and a vermifuge, and to protect woolen garments from moths. It gives the peculiar flavor to the cordial called absinthe. The volatile oil is a narcotic poison. The term is often extended to other species of the same genus.(Bot.)
  2. 2.
    Anything very bitter or grievous; bitterness.
    “Lest there should be among you a root that beareth gall and wormwood.” — Deut. xxix. 18.
Phrases & compounds
Roman wormwood — an American weed (Ambrosia artemisiaefolia); hogweed.
Tree wormwood — a species of Artemisia (probably Artemisia variabilis) with woody stems.
Wormwood hare — a variety of the common hare (Lepus timidus); -- so named from its color.