yestreen
The night before; last night.
archaic
Late yestreen I saw the new moon, the old moon in her arms
Where it comes from
From Middle English yestreen, alteration of yestereven (“last night, yesterday evening”), from Old English ġiestranǣfen (“yesterday evening”), equivalent to yester- + e'en (“evening”). Cognate with West Frisian justerjûn (“yestreen; last night”).
Adapted from the Wiktionary entry yestreen (CC BY-SA 4.0).