Emily Dickinson Lexicon

FROWN, v.i. [Fr. refrogner, properly to knit the brows. Frogner, the primitive word, is not used. It is allied perhaps to frounce, from the root Rn.]

1. To express displeasure by contracting the brow, and looking grim or surly; to look stern; followed by on or at; as, to frown on a profligate man, or to frown at his vices. Heroes in animated marble frown. Pope.
2. To manifest displeasure in any manner. When providence frowns on our labors, let us be humble and submissive.
3. To lower; to look threatening.