Lexical Definition

‎חָצִיר‎ châtsîyr (khaw-tseer') grass H:N-M
perhaps originally the same as ‎חָצִיר‎, from the greenness of a courtyard

grass, hay, herb, leek.

1) grass, leek, green grass, herbage
1a) grass
1b) of the quickly perishing (fig.)

See Greek: αὐλή · βοτάνη · χλωρός · χόρτος

Brown-Driver-Briggs

II. ‎חָצִיר‎ noun masculineIsa 15:6 green grass, herbage, absolute ‎חָצִיר‎ Num 11:5 + 16 t.; construct ‎חֲצִיר‎ Isa 37:27 = 2Kgs 19:26; Ps 129:6

1. grass, as food for animals 1Kgs 18:5; Job 40:15; Ps 104:14; Ps 147:8; Prov 27:25 (|| ‎דֶּשֶׁא‎ and ‎עֵשֶׂב‎), Isa 15:6 (|| ‎דֶּשֶׁא‎ and ‎יֶרֶק‎); specifically of leeks (as still sometimes in Aramaic, see Löwpp. 226, 228) Num 11:5 (see Di); in simile of abundant growth Isa 44:4 (see ᵐ5 Ew Che); on Isa 35:7 see I. ‎חָצִיר‎ above

2. as type of what is quickly perishing Job 8:12, hence figurative of perishing enemies ‎חֲצִיר גַּגּוֺת‎ Isa 37:27 = 2Kgs 19:26 (|| ‎דֶּשֶׁא‎, ‎עֵשֶׂב‎), Ps 129:6, i.e. having no depth of root; of wicked, soon to be cut down Ps 37:2 with special reference to Israel's oppressors Isa 40:6 (|| [‎השׂרה‎] ‎ציץ‎), vIsa 40:7 (|| id.), vIsa 40:7 vIsa 40:8 (|| id.), Isa 51:12 in simile of frail man Ps 90:5 man's days Ps 103:15 (|| ‎ציץ השׂדה‎).

Brown-Driver-Briggs References

Book Refs
Numbers 11:5
1 Kings 18:5
2 Kings 19:26
Job 8:12 · 40:15
Psalms 37:2 · 90:5 · 103:15 · 104:14 · 129:6 · 147:8
Proverbs 27:25
Isaiah 15:6 · 35:7 · 37:27 · 40:6 · 40:7 · 40:8 · 44:4 · 51:12