a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations | a framework of wood or metal that contains a glass windowpane and is built into a wall or roof to admit light or air |
the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause | a transparent opening in a vehicle that allow vision out of the sides or back; usually is capable of being opened |
an amount of time | a transparent panel (as of an envelope) inserted in an otherwise opaque material |
the interval taken to complete one cycle of a regularly repeating phenomenon | (computer science) a rectangular part of a computer screen that contains a display different from the rest of the screen |
a unit of geological time during which a system of rocks formed | a pane of glass in a window |
the end or completion of something | an opening in a wall or screen that admits light and air and through which customers can be served |
(ice hockey) one of three divisions into which play is divided in hockey games | an opening that resembles a window in appearance or function |
| the time period that is considered best for starting or finishing something |