Outgrowth from the base of a grass blade

Wiktionary Word definitions in Wiktionary
n. 1 A strap-shaped structure. 2 (context botany English) A portion of a leaf found at the base of the petiole, when present. 3 (context botany English) In many grasses (Poaceae) and some sedges (Cyperaceae), the membranous appendage or ring of hairs projecting ...

WordNet Word definitions in WordNet
n. (botany) any appendage to a plant that is shaped like a strap

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Ligule \Lig"ule\ (l[i^]g"[-u]l), n. [L. ligula, lingula, little tongue, dim of lingua tongue : cf. F. ligule.] (Bot.) The thin and scarious projection from the upper end of the sheath of a leaf of grass. A strap-shaped corolla of flowers of Composit[ae]. ...

Wikipedia Word definitions in Wikipedia
A ligule (from "strap", variant of lingula , from lingua "tongue") — is a thin outgrowth at the junction of leaf and leafstalk of many grasses (Poaceae) and sedges . A ligule is also a strap-shaped extension of the corolla , such as that of a ray floret ...