Emily Dickinson Lexicon

SMOOTH'NESS, n.

1. Evenness of surface; freedom from roughness or asperity; as, the smoothness of a floor or wall; smoothness of the skin; smoothness of the water.
2. Softness or mildness to the palate; as, the smoothness of wine.
3. Softness and sweetness of numbers; easy flow of words. Virgil, though smooth where smoothness is required, is far from affecting it. – Dryden.
4. Mildness or gentleness of speech; blandness of address. – Shak.