yesternight adverb & noun.
['jɛstǝnʌɪt] Now
arch. &
dial. OE.[from YESTER + NIGHT noun.]A. adverb. On the night of yesterday, last night. Also, yesterday evening.
OE.b. noun. Last night, the night just past. Also, yesterday evening.
E16. [TahlilGaran] English Dictionary ▲