Webster's Revised Unabridged Dictionary · 1913

Dag

Dag (dag) , noun

[Compare French dague, Late Latin daga, Dutch dagge (from French); all prob. from Celtic; Compare Gael. dag a pistol, Armor. dag dagger, Welsh dager, dagr, Ir. daigear. Compare Dagger.]

1.
A dagger; a poniard. [Obsolete] — Johnson
2.
A large pistol formerly used. [Obsolete]
The Spaniards discharged their dags, and hurt some. — Foxe
A sort of pistol, called dag, was used about the same time as hand guns and harquebuts. — Grose
3.
(Zoology) The unbranched antler of a young deer.

Dag , noun

[Of Scand. origin; compare Swedish dagg, Icelandic dogg. r71. See Dew.]

A misty shower; dew. [Obsolete]

Dag , noun

[Old English dagge (compare Dagger); or compare Anglo-Saxon dāg what is dangling.]

A loose end; a dangling shred.
Daglocks, clotted locks hanging in dags or jags at a sheep's tail. — Wedgwood

Dag , transitive verb

[1, from Dag dew. 2, from Dag a loose end.]

1.
To daggle or bemire. [Provincial English] — Johnson
2.
To cut into jags or points; to slash; as, to dag a garment. [Obsolete] — Wright

Dag , intransitive verb

To be misty; to drizzle. [Provincial English]