Emily Dickinson Lexicon

CHAR'LOCK, n. [Sax. cerlice. Leac, in Saxon, is a leek, but the same word occurs in hemlock, and it probably signifies a plant or root.]

The English name of the Raphanus Raphanistrum and Sinapis arvensis, very pernicious weeds among grain. One kind has yellow flowers; another, white, with jointed pods. – Lee. Encyc.