cilin.

Headword: 
cilin.
Principal English Translation: 

a small shell (see Molina)

Alonso de Molina: 

cilin. caracol chiquito.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 22r. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

auh yn jnacaztitech nenecoc pipilcatiujia teucujtlaepcololli: yoan conaqujaia icoiolnacoch, teuxiujtl in tlachioalli, tlaxiuhçalolli: yoan chipolcuzcatl, yn jcuzquj, oc cepa yielpancuzquj iztac cilin = And from both ears hung curved, gold, shell pendants. And they fitted [his ears] with ear plugs made a mosaic of turquoise. And [he wore] a shell necklace. Moreover, his breast ornament was of white seashells. (16th century, Mexico City)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 2—The Ceremonies, No. 14, Part III, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1951), 65.