'Runch' definitions:

Definition of 'runch'

(from WordNet)
noun
Eurasian weed having yellow or mauve or white flowers and podlike fruits [syn: jointed charlock, wild radish, wild rape, runch, Raphanus raphanistrum]

Definition of 'Runch'

From: GCIDE
  • Runch \Runch\, n. (Bot.) The wild radish. --Dr. Prior. [1913 Webster]