A short, loose fitting, sleeveless undergarment or "Top", now usually worn under a sheer blouse and sometimes as sleepwear. Camisoles often come in sets with matching shorts and panties.
Cami or camisoles are items of female lingerie that cover from bust to waist, usually sleeveless and they offer little or no support for the breasts. Nowadays camis or cami-tops are sometimes lingerie that is worn as outerwear instead of underwear. See JK Lingerie camisoles
A fitted top with spaghetti straps that can be worn alone or as a layering piece. In the past decade camisoles have morphed from underwear (used to hide bra lines from under sheer tops) to lacy outerwear.