MEANING: verb intr.: To quibble.
noun: A subtlety or quibble.

ETYMOLOGY: Of uncertain origin, perhaps short for quillity, an alteration of quiddity. Earliest documented use: 1576.

QUIDLET - one Pound Sterling after dieting (or inflation)

QUILLETH - to write with a feather pen, 3rd person singular

SQUILLET - a small asparagus. (Per Wikipedia: "Squill · Drimia maritima, a medicinal plant native to the Mediterranean...," part of a genus of about 50 to 80 species of bulb-forming perennial herbaceous plants in the family Asparagaceae...)