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preceding all other objects or events in order, time, or importance; occurring before all other members of a series.

a class mail comprising letters, postcards, and other mail sealed against inspection, having a higher priority than second, third, or fourth-class mail; -- it is the highest class of mail not handled in a special manner, as is registered or priority mail.

Denoting a quantity consisting of one more than one; one plus one more; -- representing the number two as an Arabic numeral

a game in which a pitcher allows the opposing team only 2 hits.

one more than nineteen; denoting a quantity consisting of twenty items or units; -- representing the number twenty as Arabic numerals

coming next after the nineteenth in a series

coming next after the twentieth in a series

one more than twenty-one; denoting a quantity consisting of twenty-two items or units; -- representing the number twenty-two as Arabic numerals

coming next after the twenty-first in a series

one more than twenty-two; denoting a quantity consisting of twenty-three items or units; -- representing the number twenty-three as Arabic numerals

coming next after the twenty-second in a series

one more than twenty-three; denoting a quantity consisting of twenty-four items or units; -- representing the number twenty-four as Arabic numerals