Cy·pe·rus | \ sīˈpirəs, sə̇ˈ- \
Definition of Cyperus
: a genus of plants (family Cyperaceae) having the scales of the spikelet 2-ranked, the flowers all perfect, and the spikelets alike — see galingale sense 2, nut grass sense 1a, papyrus sense 1, umbrella plant sense 1
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