cheville

[ shuh-vee ]
/ ʃəˈvi /

noun Prosody.

a word or expression whose only function is to fill a metrical gap in a verse or to balance a sentence.Compare expletive(def 2).

Origin of cheville

1880–85; < French: plug, peg < Latin clāvicula tendril. See clavicle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019