oat grass

== English == === Alternative forms === oatgrass === Noun === oat grass (usually uncountable, plural oat grasses) Any of various grasses resembling oats: Arrhenatherum species Avenula species Danthonia californica, California oatgrass Trisetum species ==== Derived terms ==== black oat grass (Piptochaetium avenaceum) === References === “oat grass”, in OneLook Dictionary Search. oat grass on Wikipedia.Wikipedia