Monsoon
Etymology
From Arabic "mawsim" ("season"), which Arab sailors used for the seasonal trade winds of the Indian Ocean. It reached English through Portuguese "monção" and Dutch "monssoen."
noun · /mon-SOON/
A seasonal wind system that reverses direction with the seasons, and especially the heavy summer rains it brings to South Asia.
What it names
A planet-scale seasonal rhythm — not just rain, but the wind reversal that drives it.
Example
Farmers watched the sky for the first break of the monsoon.
Related idea
A monsoon is a seasonal shift in prevailing winds; a squall is a single, momentary burst.