Lexical Definition

‎רֶנֶן‎ renen (reh'-nen) ostrich ^H:N-M
from ‎רָנַן‎

[idiom] goodly.

• an ostrich (from its wail)

1) something with a piercing cry
1a) bird of piercing cries
1a1) ostrich

Brown-Driver-Briggs

Also see: יָעֵן

‎רְנָנִים‎ noun [masculine] plural bird of piercing cries, i.e. ostrich, according to ᵑ9 Bo Di and most, ‎׳‎‎כְּנַף ר‎ Job 39:13, but read probably ‎יְעֵנִים‎ Hoffm Bu Du (as Lam 4:3 Qr), see [ ‎יָעֵן‎].

Brown-Driver-Briggs References