From an unused root (meaning to be tender); green, i.e. A young ear of grain; hence, the name of the month Abib or Nisan -- Abib, ear, green ears of corn (not maize).
H24. abib
אָבִיב noun masculineLeviticus 2:14
collective (LagBN 207 Infinitive)
1 fresh, young ears of barley Exodus 9:31; indefinite Leviticus 2:14 א ליהוה בִּכּוּרִים ׳מִנְחַת בָּאֵשׁ קָלוּי.
2 הָֽאָבִיב חֹדֶשׁ month of ear-forming, or of growing green, Abib, month of Exodus & passover, Exodus 13:4; 23:15; 34:18 (twice in verse) (JE), Deuteronomy 16:1 (twice in verse) (1st month = circa April = הָר ׳הַחֹדֶשׁ הָרִאשֹׁן, (q. v.) in P; see Di Exodus 12:2; = post-exilic נִיסָן q. v.)
אֲבִגַיִל see אֲבִיגַיִל below II. אבה.