/blow"son, -zon, blooh zohn", blooh"zon/ , n.
1. a woman's outer garment having a drawstring, belt, or similar closing, at or below the waist, which causes it to blouse.
adj.
2. of or pertaining to such a garment, the style it exemplifies, or something considered to resemble this style, as a hairdo: a blouson dress; the blouson effect; a blouson bob.
[ 1900-05; blouse BLOUSE + -on n. suffix ]