Definition of scutellum

• n. - A rounded apothecium having an elevated rim formed of the proper thallus, the fructification of certain lichens.
• n. - 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; a scutella. See Thorax.
• n. - One of the transverse scales on the tarsi and toes of birds; a scutella.