Definition from Wiktionary, the free dictionary
yesternight (not comparable)
- (archaic) Last night.
- 1611, King James Version of the Bible, Genesis 31:29,
- It is in the power of my hand to do you hurt: but the God of your father spake unto me yesternight, saying, Take thou heed that thou speak not to Jacob either good or bad.
- 1820, Walter Scott, Ivanhoe, Chapter 6,
- […] when the Templar crossed the hall yesternight, he spoke to his Mussulman slaves in the Saracen language, which I well understand, and charged them this morning to watch the journey of the Jew […]
- 1847, Emily Brontë, Wuthering Heights, Chapter 29,
- […] she has disturbed me, night and day, through eighteen years—incessantly—remorselessly—till yesternight; and yesternight I was tranquil.
yesternight (plural yesternights)
- (archaic) A preceding night.