Bäck'sĕt1, a.
a. [back and set.] Set upon in the rear. “Backset with Pharaoh’s whole power.” Anderson.
2 entries under this word
a. [back and set.] Set upon in the rear. “Backset with Pharaoh’s whole power.” Anderson.
n. A check to the progress of any thing; a relapse. [Scottish.]