Rainout, washout, rain delay, and rain stopped play are terms regarding an outdoor event, generally a sporting event, delayed or canceled due to rain, or the threat of rain. It is not to be confused with a type of out in baseball, though a baseball game can be rained out.

RAINOUT
Rainout
Rainout
Rainout reduction in a breathing circuit
The rainout parameterization in a photochemical model
A Rainout Shelter Design for Intercepting Different Amounts of Rainfall
Using rainout shelters to evaluate climate change effects on the demography of Cryptantha flava
NASAL CANNULA WITH REDUCED HEAT LOSS TO REDUCE RAINOUT
NUMERICAL MODELS OF DIFFUSION AND RAINOUT OF STRATOSPHERIC RADIOACTIVE MATERIALS.
Rainout lifetimes of highly soluble aerosols and gases as inferred from simulations with a general circulation model
Rainout lifetimes of highly soluble aerosols and gases as inferred from simulations with a general circulation model
The influence of soil texture and vegetation on soil moisture under rainout shelters in a semi-desert grassland
Flashing liquid jets and two-phase droplet dispersion II. Comparison and validation of droplet size and rainout formulations