evening out

Short definition from Wiktionary

Noun

1. 1
   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.

Verb

1. 1
   present participle and gerund of even out