Nearu-searu

According to the Old English Dictionary:

we ;

nearu-searu

f. A wile that causes restraint or confinement (?) :-- Hýdde wǽron þurh nearusearwe næglas on eorþan (of the nails in the cross that had been buried), Elen. Kembl. 2215 ; El. 1109. nearu-searu