ˈ ̷ ̷( ̷ ̷)ˌ ̷ ̷ noun
Etymology: squirrel (I) + tail
1. : a tufted perennial grass ( Sitanion hystrix ) that has very bristly spikes disarticulating above each node and resembles lyme grass
2. also squirreltail grass or squirreltail barley : any of several grasses of the genus Hordeum (as wall barley) with bushy spikes