牙缝儿

牙缝儿	yá fèngr	gap between teeth
牙	yá	tooth / ivory / CL:颗
牙缝	yá fèng	gap between teeth
缝	féng	to sew / to stitch
缝	fèng	seam / crack / narrow slit / CL:道
儿	ér	child / son
儿	r	non-syllabic diminutive suffix / retroflex final