noun, masculine/em.ʁi.jɔ̃/plural: émerillons
swivel (piece, as a ring or hook, attached to another piece by a pin, in such a manner as to permit rotation about the pin as an axis); merlin
Synonyms: faucon émerillon
Inherited from Middle French emerillon, from Old French esmerillon, diminutive of esmeril, from Frankish *smiril, from Proto-Germanic *smirilaz.