Definition of: first

(fûrst) adjective
1. Preceding all others in the order of numbering: the ordinal of one.
2. Prior to all others in time; earliest.
3. Nearest or foremost in place from a given point.
4. Highest or foremost in character, rank, etc.; leading; chief; best.
—at (the) first blush On first presentation; at first thought, without mature consideration.
—at first hand Directly from the original source; without intervening assistance.
—noun
1. That which comes or is first; the beginning.
2. Music The leading or upper part, voice, or instrument; also, a unison.
3. In English universities, the highest rank in examinations for honors; also, one taking the highest rank.
4. A winning position in a contest.
5. The first day of a month; the first year in a period or reign.
6. plural The best grade of certain commercial products, as butter, sugar, etc.
—at first (or from the first) At the beginning or origin.
—adverb
1. Before all others in order, as in counting, time, place, or rank; also, in formal discourse, first′ly.
2. Before, or in preference to, some proposed act or anticipated event; sooner: He will never confess: he would die first.
3. For the first time. [OE fyrst, superlative of fore before] Synonyms (adj.): chief, earliest, foremost, front, highest, leading, original, primary, primeval, primitive, primordial, principal, pristine, supreme. Antonyms: hindmost, inferior, insignificant, last, least, lowest, secondary, subordinate, subsequent, subservient, subsidiary, trifling, trivial, unimportant.