Usage: 2 forms in 5 verses
Form Translated As     In Verse(s)
άγρωστισ wild grass LXX.Isa.9.18LXX.Isa.37.27LXX.Hos.10.4
άγρωστιν wild grass LXX.Deut.32.2LXX.Mic.5.7

Liddell-Scott-Jones

ἄγρωστις (agrōstis) wild grass G:N-F

ἄγρωστις-ωστις, ιδος,

[Refs 4th c.BC+], , accusative ἄγρωστιςωστιν[Refs 2nd c.BC+]:—dog's-tooth grass, Cynodon Dactylon, . μελιηδής[Refs 8th c.BC+]

__2 . ἐν Κιλικίᾳ Hordeum marinum, [Refs 1st c.AD+]; . ἐν Παρνασσῷ grass of Parnassus, Parnassia palustris, [Refs]