Spending the evening away from one's usual residence. The phrase typically implies going to a restaurant, going to watch entertainment, or other types of urban nightlife, starting from about 6 p.m. to 8 p.m. and lasting until approximately 11:00 pm or later.

present participle of even out

(transitive, intransitive) to make or become more even / (transitive, intransitive) to make or become more equal

(countable) An elegant dress worn by women, especially for social events in the evening, an evening gown. / (uncountable) formal attire worn for evening social events.

plural of evening out

exactly even, equal / being equal, as in score or account; tied / having nothing due, or no balance of debt on either side

equally, evenly / evenly divided

equity; equilibrium / harmony, balance; parity

Third-person singular simple present indicative form of break even

present participle of break even