Strong's Definition
probably from an unused root meaning to be prominent; properly, brightness (compare 2122), i.e. (figuratively) the month of flowers; Ziv (corresponding to Ijar or May)
KJV Usage: Zif
STEPBible — Tyndale Abridged Hebrew Lexicon
זִו (ziv) — Ziv.
§ Zif = "brightness" name of the 2nd month of the year, corresponding to Apr-May
UBS Dictionary of Biblical Hebrew
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
זִו appar. n.pr. of 2nd month, = c. April-May, named as month of beginning the temple-building base