yesternight

1 of 2

adverb

yes·​ter·​night ˈye-stər-ˌnīt 

archaic

: on the night last past

yesternight

2 of 2

noun

: the night last past

Word History

Etymology

Adverb

Middle English, from Old English gystran niht, from giestran yesterday + niht night

First Known Use

Adverb

before the 12th century, in the meaning defined above

Noun

1513, in the meaning defined above