Definition of hemlocks:
(n) :
Any of the poisonous umbelliferous plants, of the genera
(n) :
Conium, either Conium maculatum or Conium chaerophylloides.
(n) :
Cicuta (water hemlock).
(n) :
Poison obtained from these Conium and Cicuta plants.
(n) :
Any of several coniferous trees, of the genus Tsuga, that grow in North America; the wood of such trees.
(n) :
A number of places in the United States: