What is the meaning of Upcast?

Cast up; thrown upward.

A cast; a throw.

The ventilating shaft of a mine out of which the air passes after having circulated through the mine.

A current of air passed along such a shaft.

An upset, as from a carriage.

A taunt; a reproach.

A cast from subtype to supertype.

A message transmitted via upcasting.

To cast or throw up; to turn upward.

To taunt; to reproach; to upbraid.

To cast from subtype to supertype.

To broadcast a message or data to aircraft or satellites, especially via radio waves; as opposed to uplinking to a specific satellite or aircraft

To upcast.

To reproach or taunt.

Source: wiktionary.org