| acey-deucy |
a form of backgammon that assigns a special value to a throw of a one or a two. |
| amoeba |
a one-celled organism that changes its shape as it moves and engulfs food. |
| banana republic |
(informal) a small, often politically unstable Central American country with a one-crop economy that is controlled by foreign capital (used as a derogatory label). |
| centenary |
a one hundredth anniversary; centennial. [1/3 definitions] |
| centennial |
having to do with a one hundredth anniversary. [2 definitions] |
| conversion |
in football, a one-point kick or a two-point play scored following a touchdown; extra point; point after touchdown. [1/6 definitions] |
| coveralls |
a one-piece protective garment with trousers and sleeves, worn by workmen over clothing. |
| creeper |
(usu. pl.) a one-piece garment for an infant, which covers top and bottom. [1/6 definitions] |
| diopter |
a unit of measure of the refractive power of a lens, equal to the power of a lens with a one-meter focal length. |
| jump suit |
a one-piece garment worn by parachutists. [1/2 definitions] |
| maillot |
a woman's swimsuit, esp. a one-piece suit, made of this fabric. [1/3 definitions] |
| Möbius strip |
a one-sided surface formed by twisting a rectangular strip one hundred and eighty degrees and connecting its two ends together. |
| outfit |
a set of complementing clothes, or a one-piece garment that extends at least from hips to shoulders. [1/5 definitions] |
| overalls |
a British word for a one-piece protective garment with trousers and sleeves, worn by workmen over clothing. "Overalls" often has the same meaning as the American word "coveralls." [1/2 definitions] |
| PCV valve |
a one-way valve that regulates the flow of engine exhaust fumes into an auto engine's cylinders, as part of a pollution control system. |
| playsuit |
a one-piece or two-piece garment suitable for active play and worn esp. by children. |
| reserve clause |
a condition in some professional sports contracts that provides for a one-year extension at the team owner's option. |
| rompers |
a one-piece playsuit with short bloomers worn esp. by young children. |
| session |
a one or more meetings of a court or a government council. [1/2 definitions] |
| short division |
mathematical division of one number by another, esp. by a one-digit divisor, without writing out the remainders. |
| single |
(informal) a one-dollar bill. [1/12 definitions] |