Strong's Definition
of foreign origin; byssus or fine vegetable wool: -green.
STEPBible — Tyndale Abridged Hebrew Lexicon
כַּרְפַּס (kar.pas) — fine linen. cotton or fine linen
UBS Dictionary of Biblical Hebrew
noun m
Plants
cotton = an annual plant, which grows to 2 meters in height, with soft, lobed leaves and mallow-like flowers, which are yellow with a purple center; when the flower matures, the boll underneath puffs out and eventually splits, revealing a mass of fine white filaments that we know as “cotton wool;” ◄ Gossypium herbaceum; ► used for making cloth
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
כַּרְפַּס n.m. cotton (or fine linen);—Est 1:6 ref