Merriam-Webster Online Dictionary
blouse (noun)1.
a) a long loose overgarment that resembles a shirt or smock and is worn especially by workmen, artists, and peasants
b) the jacket of a uniform
2.
a usually loose-fitting garment especially for women that covers the body from the neck to the waist
intransitive verb
transitive verb
to fall in a fold - coats that blouse above the hip to cause to blouse