1. An evergreen tree, could refer to any one of a genus of conifers named Tsuga
   "The Eastern hemlock tree is an important component of many forest ecosystems in North America";
   - hemlock tree
    
2. A large biennial herb native to Eurasia and Africa, naturalized in North America, having fernlike leaves and white flowers; all parts extremely poisonous
   "The botanist warned students to avoid touching the poison hemlock";
   - poison hemlock, poison parsley, Nebraska fern, winter fern, Conium maculatum
    
3. Poisonous drug derived from an Eurasian plant of the genus Conium
   "Socrates refused to flee and died by drinking hemlock"
    
4. Soft coarse splintery wood of a hemlock tree especially the western hemlock
   "Hemlock is sometimes used for rough construction lumber"

Derived forms: hemlocks

Type of: conifer, coniferous tree, phytotoxin, plant toxin, poisonous plant, wood

Part of: Conium, genus Conium, genus Tsuga, Tsuga

Encyclopedia: Hemlock, Tillamook County, Oregon