blade of grass
From Longman Dictionary of Contemporary Englishblade of grassblade of grassHBPa single thin flat piece of grass → bladeExamples from the Corpusblade of grass• But every drop that fell contained the promise of another leaf, another blossom, another blade of grass in the spring.• There was not a breath of wind blowing, and not a leaf or blade of grass stirred.• They had stripped the lower forest of anything resembling a leaf or blade of grass.