A floor or level of a building or ship.
A vertical level in certain letters, such as a and g.
The middle portion of the hull of a ship or the fuselage of an aircraft.
That part of the upper deck of a ship between the quarterdeck and the forecastle.
A part of a piece of clothing that covers the waist.
The part of the body between the pelvis and the stomach.
The narrow connection between the thorax and abdomen in certain insects (e.g., bees, ants and wasps).