Standard

Etymology

Middle English for an upright timber, from the Old French estendart from the verb estendre as influenced by the verb stand

Noun

1. a level of quality or attainment
2. something used as a measure for comparative evaluations
3. an object supported in an upright position
4. a musical work of established popularity
5. the flag or ensign carried by a cavalry unit

Adjective

1. falling within an accepted range
2. (of a tree or shrub): growing on an erect stem of full height