MONSOON
monsoon
(noun) a seasonal wind in southern Asia; blows from the southwest (bringing rain) in summer and from the northeast in winter
monsoon
(noun) any wind that changes direction with the seasons
monsoon
(noun) rainy season in southern Asia when the southwestern monsoon blows, bringing heavy rains
Source: WordNet® 3.1
Etymology
Noun
monsoon (plural monsoons)
Any of a number of winds associated with regions where most rain falls during a particular season.
Tropical rainy season when the rain lasts for several months with few interruptions.
The rains themselves.
Entire meteorological systems with such characteristics.
Source: Wiktionary
Mon*soon", n. Etym: [Malay musim, fr. Ar. mausim a time, season: cf.
F. monson, mousson, Sr. monzon, Pg. monç\'eeo, It. monsone.]
Definition: A wind blowing part of the year from one direction, alternating
with a wind from the opposite direction; -- a term applied
particularly to periodical winds of the Indian Ocean, which blow from
the southwest from the latter part of May to the middle of September,
and from the northeast from about the middle of October to the middle
of December.
Source: Webster’s Unabridged Dictionary 1913 Edition