Emily Dickinson Lexicon

DIM, v.t.

1. To cloud; to impair the powers of vision; as, to dim the eyes.
2. To obscure; as, to dim the sight; to dim the prospect.
3. To render dull the powers of conception.
4. To make less bright; to obscure. Each passion dimmed his face. – Milton.
5. To render less bright; to tarnish or sully; as to dim gold.