recurved

In botany, curved back or downward: as, a recurved leaf, petal, etc.

In zoology, bent upward: the opposite of decurved: as, the recurved beak of the avoset.

Curved in an opposite or uncommon direction; bent back

Simple past tense and past participle of recurve.

curved or bent, either in two different directions, or back on itself

curved backward or inward