DULL
Dull, v. t. [imp. & p. p. Duller; p. pr. & vb. n. Dulling.]
1. To deprive of sharpness of edge or point. "This . . . dulled their swords." Bacon. Borrowing dulls the edge of husbandry. Shak.
2. To make dull, stupid, or sluggish; to stupefy, as the senses, the feelings, the perceptions, and the like. Those [drugs] she has Will stupefy and dull the sense a while. Shak. Use and custom have so dulled our eyes. Trench.
3. To render dim or obscure; to sully; to tarnish. "Dulls the mirror." Bacon.
4. To deprive of liveliness or activity; to render heavy; to make inert; to depress; to weary; to sadden. Attention of mind . . . wasted or dulled through continuance. Hooker.
DULL
Dull, v. i.
Defn: To become dull or stupid. Rom. of R.
DULLARD
Dull"ard, n. Etym: [Dull + -ard.]
Defn: A stupid person; a dunce. Shak.
— a.
Defn: Stupid. Bp. Hall.