Exact historical dictionary sense
Clean in Webster's 1913 dictionary
The 1913 record labels clean as verb. Its source-bounded etymology and selected historical definition appear below.
[See Clean, a., and cf. Cleanse.]
Cross-verified historical senseIn Webster's Revised Unabridged Dictionary (1913), "clean" is labeled verb. Its etymology is recorded as: "[See Clean, a., and cf. Cleanse.]" The selected historical definition says: "To render clean; to free from whatever is foul, offensive, or extraneous; to purify; to cleanse."