Webster's Revised Unabridged Dictionary · 1913

Milt

Milt , noun

[Anglo-Saxon milte; akin to Dutch milt, German milz, Old High German milzi, Icelandic milti, Danish milt, Swedish mjalte, and prob. to English malt, melt. r108. See Malt the grain.]

(Anatomy) The spleen.

Milt , noun

[Akin to Danish melk, Swedish mjolke, German milch, and English milk. See Milk.]

(a)
(Zoology) The spermatic fluid of fishes.
(b)
(Zoology) The testes, or spermaries, of fishes when filled with spermatozoa.

Milt , transitive verb

To impregnate (the roe of a fish) with milt.