Lexical Definition

‎ὀστράκινος‎ ostrákinos (os-tra'-kin-os) clay ^G:A
from ("oyster") (a tile, i.e. terra cotta)

of earth, earthen.

• earthen-ware, i.e. clayey
• by implication, frail

Abbott-Smith

ὀστράκινος -η, -ον (< ὄστρακον, an earthen vessel or potsherd), [in LXX chiefly for חֶרֶשׂ;]
made of clay, earthen: II Co 4:7, II Ti 2:20.†

Abbott-Smith References

Liddell-Scott-Jones

ὀστράκινος-ῐνος, η, ον,

earthen, made of clay, of vessels, [NT+5th c.BC+]

__2 like earthenware, ὀστράκινατὸ δέρμα, ={ὀστρακόδερμα}, variant in [Refs 2nd c.AD+]

_{LSJ Scripture Refs: 2Tim.2.20 ☩ 2Cor.4.7}