Strong's #7827: shcheleth (pronounced shekh-ay'-leth)
apparently from the same as 7826 through some obscure idea, perhaps that of peeling off by concussion of sound; a scale or shell, i.e. the aromatic mussel.:--onycha.
Brown-Driver-Briggs Hebrew Lexicon:
ׁ
shechêleth
1) onycha
1a) an ingredient used in the holy incense
Part of Speech: noun feminine
Relation: apparently from the same as H7826 through some obscure idea, perhaps that of peeling off by concussion of sound
Usage:
This word is used 1 times:
Exodus 30:34: "Take unto thee sweet spices, stacte, and onycha, and galbanum; these sweet spices with pure frankincense:"