Definition of ollies:
(n) :
(skateboarding, surfing, snowboarding) An aerial maneuver in which one catches air by leaping off the ground with the skateboard and into the air.
(v) :
(intransitive) To perform an ollie.
(n) :
A unisex given name.
(n) :
A diminutive of the male given name Oliver, from French [in turn from Latin, in turn from Germanic].
(n) :
A female given name.
(n) :
A diminutive of the female given names Olivia or Olive, from Latin [in turn from Etruscan, in turn from Greek].