Physical. Salmonella bacteria are rod-shaped gram-negative bacteria. Gram-negative bacteria do not retain the crystal violet dye used in the gram staining method due to the fact that they have cell walls that are thin.
Noun. 1. nightie-lingerie consisting of a loose dress designed to be worn in bed by women. nightdress, nightgown, night-robe, gown. intimate apparel, lingerie-women's underwear and nightclothes.
Nightwear â also called sleepwear, nightclothes, or nightdress â is clothing designed to be worn while sleeping. The style of nightwear worn may vary with the seasons, with warmer styles being worn in colder conditions and vice versa. Nightgown-loose hanging nightwear for women, typically made from cotton, silk, satin, or nylon. 2  Nightshirt-loose-fitting garment, longer than a regular shirt. 3  Nightcap-a warm cloth cap sometimes worn by women or men with pajamas or a nightgown.