An agreed method of measuring time; a specification or standard of either the rate at which time passes, or of points in time, or of both.

(rail transport) A track gauge of 56.5 inches (1435 mm).

(linguistics) The form of the English language widely accepted as the usual correct form.

(astronomy) Any astronomical object of known diameter whose distance can then be calculated from the angle it subtends

plural of standard ruler

A lamp supported by a tall vertical pole in order that light comes from above those seated in the vicinity.

(sociolinguistics) A form of a language that is institutionally promoted, regarded as the most "correct" or neutral variety; used by a population for public and formal purposes.

A relatively large poodle, measuring more than 15 inches (38 cm).

(mathematics, statistics) The value of a variable minus its mean, divided by its standard deviation.

(automotive) Mechanical transmission which shifts gears by the action of the driver's hand on the gearstick or gear lever, rather than automatically; a manual gearbox.