A ball that passes so far from the batsman that the umpire deems it unplayable; the arm signal used by an umpire to signal a wide; the extra run added to the batting side's score

Having a large physical extent from side to side.

“We walked down a wide corridor.”

Large in scope.

“The inquiry had a wide remit.”

Operating at the side of the playing area.

“That team needs a decent wide player.”

Extensively

“He travelled far and wide.”

Completely

“He was wide awake.”

Away from a given goal

“A few shots were fired but they all went wide.”