n.1.A shred; a fragment; a strip of wood.
References in classic literature ?
Cast on another culpon, John, and stir the broth with thy sword-sheath," growled Johnston, looking anxiously for the twentieth time at the reeking pot.
2 sothen = sithen, then; cuper = culpons, pieces (possibly < A-N coupeure, `cutting'; not in MED or OED).