Lexical Definition

‎βύσσος‎ býssos (boos'-sos) fine linen G:N-F
of Hebrew origin (‎בּוּץ‎)

fine linen.

Abbott-Smith

βύσσος, -οῦ, ἡ (cf. Heb. בּוּץ), [in LXX chiefly for שֵׁשׁ, בּוּץ ;]
byssus, a fine species of flax, also the linen made from it: Lk 16:19.†

Abbott-Smith References

Book Refs
Luke 16:19

Liddell-Scott-Jones

βύσσος, ,

flax, and the linen made from it, [Refs 5th c.BC+]; used of perennial flax, Linum angustifolium, grown in Elis, [Refs 2nd c.AD+], and of Linum usitatissimum, ={λίνον Ἑβραίων}, [Refs]; also, in later writers, of Indian cotton, Gossypium herbaceum, [Refs 2nd c.AD+]; and of silk, τὰ Σηρικὰ ἔκ τινων φλοιῶν ξαινουένης βύσσου [Refs 1st c.BC+]