1) Air current 2) Current of air 3) South wind 4) Southerly 5) Wind 
[meteorology] In meteorology, Souther is a strong wind coming from the south. It`s also a term widely used in maritime jargon to indicate, in fact, generally `strong wind from the south`. ...
• (n.) A strong wind, gale, or storm from the south.
South'er noun A strong wind, gale, or storm from the south.