monsoon
noun
[ mɒnˈsuːn ]
• a seasonal prevailing wind in the region of South and SE Asia, blowing from the south-west between May and September and bringing rain (the wet monsoon ), or from the north-east between October and April (the dry monsoon ).
Origin:
late 16th century: from Portuguese monção, from Arabic mawsim ‘season’, from wasama ‘to mark, brand’.