Sleeveless blouse designs: A sleeveless sweater is called a sweater

A sleeveless sweater is called a sweater vest. I think in British English, a musculosa is a vest, but in the United States, a vest is either sleeveless outerwear or a sleeveless garment worn over a shirt like this: http://withfriendship.com/images/i/43670/Vest-image.jpg. In British English a pullover, a jumper and a sweater are all pretty much the same, referring to a thick, warm, one-piece garment that is pulled over the head (hence pullover). As far as I know, in American English the word pullover isn't used and the word jumper refers to some kind of dress. A cardigan is like a pullover/jumper/sweater, except with buttons or a zip (zipper in US) down the middle so it doesn't go over the head. But then people's definition of clothing often vary, so maybe ... Hello, Dictionaries say that in British English "singlet" is a man's sleeveless undershirt. What is the American equivalent of "singlet" in this meaning? (only this meaning in the US) Thank you. Salut! How does one distinguish among "la veste," "le veston," and "le blouson"? I'd like to be able to distinguish among a sleeveless garment (vest in English), a dressy jacket like a sport coat or suit coat, and a short casual jacket, as opposed to a heavy coat. Merci d'avance!