ankerern.
A compositorial error for anker (see anchor n.2).
ΚΠ
1596 Thorpe's Test. in Foxe's Actes & Monuments (ed. 5) I. 499/2 Ankerers [earlier edd. Ankers], & strange beggars, are licensed and admitted of Prelates and priests, for to beguile the people.
This entry has been updated (OED Third Edition, June 2022).
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n.1596