Beátere

According to the Old English Dictionary:

beátere

Substitute: I. a beater:--Hé hét his cwelleras þone hálgan beátan mid saglum. Þá bærst sum sagol intó ánes beáteres eágan, Hml. S. 4, 143. II. a boxer; pugil, Ælfc. Gr. Z. 39, 1. beatere