ocrea
noun
oc·rea
variants or ochrea
ˈäkrēə,
ˈōk-
plural ocreae or ochreae
-ēˌē
: a tubular sheath around the base of the petiole consisting of a single stipule in the red clover or of a pair of coherent stipules in the buckwheat family (Polygonaceae)
Word History
Etymology
New Latin, from Latin ocrea greave, legging; perhaps akin to Latin ocris stony mountain