Webster's Revised Unabridged Dictionary · 1913

Blunt

Blunt (blunt) , adjective

[Compare Prov. German bludde a dull or blunt knife, Danish blunde to sleep, Swedish & Icelandic blunda; or perh. akin to English blind.]

1.
Having a thick edge or point, as an instrument; dull; not sharp.
The murderous knife was dull and blunt. — Shakespeare
2.
Dull in understanding; slow of discernment; stupid; -- opposed to acute.
His wits are not so blunt. — Shakespeare
3.
Abrupt in address; plain; unceremonious; wanting the forms of civility; rough in manners or speech.
Hiding his bitter jests in blunt behavior. — Shakespeare
A plain, blunt man.
4.
Hard to impress or penetrate. [Rare]
I find my heart hardened and blunt to new impressions. — Pope

Blunt is much used in composition, as blunt-edged, blunt-sighted, blunt-spoken.

Blunt , transitive verb

1.
To dull the edge or point of, by making it thicker; to make blunt. — Shakespeare
2.
To repress or weaken, as any appetite, desire, or power of the mind; to impair the force, keenness, or susceptibility, of; as, to blunt the feelings.

Blunt , noun

1.
A fencer's foil. [Obsolete]
2.
A short needle with a strong point. See Needle.
3.
Money. [Cant] — Beaconsfield