Yesternight n. : The last night; the night last past.

Yesternight adv. : On the last night.

Example:
Was Jesse Jackson crying crocodile tears at Obamas party Yesternight?

Taxonomy
gig, concert, music, M'era Luna, dancy, Down Below, Concert reviews, main stage, festival, the audience, Japanese rock band, Emilie Autumn, yesternight, Grey, listeners, keys, guitars, Hangar.

Defination from the web: