Historically, camisole referred to jackets of all kinds, including overshirts (worn under a doublet or bodice), women's négligées and sleeved jackets worn by men...So covering all the bases then. Today a camisole is a sleeveless undergarment, normally extending to the waist, and generally (barring the odd exception!) the preserve of women. Typically of a fitted shape a camisole (affectionately cami) is usually made of satin, nylon, or cotton and is as basic as a t-shirt. Though a lot more fun.