The fully shaded inner region of a shadow cast by an opaque object. / (astronomy) The area on the earth or moon experiencing the total phase of an eclipse. / (astronomy) The central region of a sunspot.

umbellar / (chemistry), pertaining to, or obtained from, certain umbelliferous plants, such as umbellic acid

(botany) A flat-topped or rounded flower-cluster (= inflorescence) in which the individual flower stalks arise from the same point, the youngest flowers being at the centre.

Of, pertaining to, bearing or having the form of an umbel.

A term used to cover a broad category of things rather than a single specific item.

A feeling of anger or annoyance caused by something offensive. / A feeling of doubt. / Leaves that provide shade, as the foliage of trees. / (obsolete) Shadow; shade.

(transitive) To displease or cause offense. / (transitive) To shade.

a secondary umbel in a compound umbel such as the carrot; an umbellule

(botany) Bearing umbels. / (botany) Pertaining to a member of the family Umbelliferae.

(anatomy) navel / (botany) hilum / (zoology) A depression or opening in the center of the base of many spiral shells. / (zoology) Either of the two apertures in the calamus of a feather.