Definition of curvets:
(v) :
(intransitive) Of a horse or, by extension, another animal: to leap about, to frolic.
(n) :
A particular leap in which a horse raises both forelegs at once, equally advanced, and, as the forelegs are falling, raises the hind legs, so that all the legs are in the air at once.
(v) :
(figuratively) (of a person) To prance; to caper, frolic.
(v) :
(transitive) To cause to leap about, dart or jump.
(v) :
(figuratively) (of an object) To jump, skip, shake.
(v) :
(of a bird) To fly or swim with darting movements.