Webster's Revised Unabridged Dictionary · 1913

Saker

Saker (sā"kẽr) , noun

[French sacre (compare Italian sagro, Sp. & Portuguese sacre), either from Latin sacer sacred, holy, as a translation of Greek "ie`rax falcon, from "iero`s holy, or more probably from Arabic caqr hawk.]

1.
(a) (Zoology) A falcon (Falco sacer) native of Southern Europe and Asia, closely resembling the lanner.

The female is called chargh, and the male charghela, or sakeret.

(b)
The peregrine falcon. [Provincial English]
2.
(Military) A small piece of artillery. — Wilhelm
On the bastions were planted culverins and sakers. — Macaulay
The culverins and sakers showing their deadly muzzles over the rampart. — Hawthorne