scutellum

(lichenology) A rounded apothecium having an elevated rim formed of the proper thallus, the fructification of certain lichens.

(zoology) The third of the four pieces forming the upper part of a thoracic segment of an insect. It follows the scutum, and is followed by the small postscutellum.

(zoology) One of the transverse scales on the tarsi and toes of birds.

(botany) A grass seed cotyledon that is highly modified for absorption.