Emily Dickinson Lexicon

SAD-DEN, v.t. [sad'n.]

1. To make sad or sorrowful; also, to make melancholy or gloomy. – Pope.
2. To make dark colored. [Obs.]
3. To make heavy, firm, or cohesive. Marl is binding, and saddening of land is the great prejudice it doth to clay lands. [Obs.] – Mortimer.