RhymeZone: flyby definitions

Definitions of flyby:

noun: A flight past a celestial object in order to make observations.
noun: (US) A low-level ceremonial flight, typically in connection with an airshow or a military parade.
noun: (figuratively) A brief visit.
noun: (nautical) A sailby performed by a hydrofoil vessel while hydrofoiling.

(Definitions from Wiktionary)