HARMATTAN
harmattan
(noun) a dusty wind from the Sahara that blows toward the western coast of Africa during the winter
Source: WordNet® 3.1
Etymology
Noun
harmattan (plural harmattans)
A dry and dusty wind which blows from the Sahara over the Atlantic coast of West Africa in December, January and February, being a hot wind in some areas and a cold wind in others.
A season which spans the period in which the harmattan wind blows.
Source: Wiktionary
Har*mat"tan, n. Etym: [F. harmattan, prob. of Arabic origin.]
Definition: A dry, hot wind, prevailing on the Atlantic coast of Africa, in
December, January, and February, blowing from the interior or Sahara.
It is usually accompanied by a haze which obscures the sun.
Source: Webster’s Unabridged Dictionary 1913 Edition