From Σήρ Sēr (an Indian tribe from whom silk was procured; hence the name of the silkworm); {Seric} that {is} silken (neuter as {noun} a silky fabric): - silk.
Mat 6:20But lay up for yourselves treasures in heaven, where neither mothG4597 nor rust doth corrupt, and where thieves do not break through nor steal:
Luk 12:33Sell that ye have, and give alms; provide yourselves bags which wax not old, a treasure in the heavens that faileth not, where no thief approacheth, neither mothG4597 corrupteth.