Definition of standard:

part of speech: adjective

Having a fixed and permanent value; not of the dwarf kind, as a tree.

part of speech: noun

That which is established as a rule, measure, or model; a criterion; a test; that which is of undoubted excellence; a standing tree or stem, as distinguished from a wall- tree; in mil., an ensign; a staff and flag, or colours; in carpentry, an upright support; in shipbuilding, an inverted knee placed upon the deck instead of beneath it; in coinage, the proportion of weight of fine metal and alloy established by authority.