Ælf-siden

根据古英语词典：

-sidenn, e;

ælf-siden

f. The influence of elves or of evil spirits, the nightmare; impetus castalidum, diaboli incubus :-- Ðis is se hálga drænc wið ælfsidene and wið eallum feóndes costungum this is the holy drink against elfin influence and all temptations of a fiend, Lacn. 11; Lchdm, iii. 10, 23. Wið ælfsidenne, L. M. 1, 64; Lchdm, ii. 138, 23. ælf-siden