Definition
a heel, i.e. (figuratively) the last of anything (used adverbially, for ever); also result, i.e. compensation; and so (adverb with preposition or relatively) on account of
Derivation
from H6117 (עָקַב) in the sense of H6119 (עָקֵב);
King James Version Usage
[idiom] because, by, end, for, if, reward.