Hemlock
a name of varied application. The hemlock of Europe and of history, the hemlock the juice of which Socrates in prison drank from the hand of his executioner, is a parsnip-like herb that we call poison hemlock. The hemlock of American lumbermen is a spruce, a fine evergreen tree, valued for its timber. The bark is used largely in tanning. See Spruce
Volume III · Aiton’s Encyclopedia