Lexical Definition

‎דָּגַר‎ dâgar (daw-gar') to gather H:V
a primitive root,

gather, sit.

1) (Qal) to gather together as a brood

See Greek: συνάγω

Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
וְדָגְרָ֣ה and it will gather a brood Isa.34.15
דָגַר֙ it gathers a brood Jer.17.11

Brown-Driver-Briggs

[‎דָּגַר‎] verb gather together as a brood (compare Aramaic ‎דְּגַר‎ heap together; so Nasar.) —

Qal Perfect 3 masculine singular ‎דָּ֨גָר‎ Jer 17:11 3 feminine singular ‎דָּֽגְרָה‎ Isa 34:15gather together into its shadow Isa 34:15 (of ‎קִפֹּז‎, q. v.), ‎דָּגָר וְלֹא יָלָד֑‎ Jer 17:11 (of partridge; simile of one getting riches unjustly).

Brown-Driver-Briggs References

Book Refs
Isaiah 34:15
Jeremiah 17:11