Twi-heáfdode

According to the Old English Dictionary:

twi-heáfdode

adj. Double-headed :-- Twyheáfdede anceps, biceps, Ælfc. Gr. 9, 55; Zup. 67, 9, 10. Twyheáfdede oððe se ðe hæfþ twégen líchaman bicorpor, 9, 21; Zup. 47, 17. [O.H. Ger. zwi-haupito biceps: Icel. tví-höfðaðr.] twi-heafdode