An unexplained word occurring in Chaucer, meaning, perhaps, an aromatic sweetmeat for sweetening the breath. "Under his tongue a truelove he bore."
Truelove knot, a complicated, involved knot that does not readily untie; the emblem of interwoven affection or engagement; called also true-lover's knot.
... "Mistress Truelove, I have read the good book that you gave me, and I cannot deny that I am much beholden to you," and her debtor sighed ... — Audrey • Mary Johnston