stackup

The definition of a stackup is when airplanes circle around at different heights while waiting to land.

(noun)

An example of a stackup is what happens at an airport when a landing strip must be closed.

See stackup in Webster's New World College Dictionary

noun

an arrangement of circling aircraft at various altitudes, each awaiting its turn to land

See stackup in American Heritage Dictionary 4

noun

A deployment of aircraft circling an airport at designated altitudes while awaiting instructions to land.

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