1: κάρφος
(Strong's #2595 — Noun Neuter — karphos — kar'-fos )

"a small, dry stalk, a twig, a bit of dried stick" (from karpho, "to dry up"), or "a tiny straw or bit of wool," such as might fly into the eye, is used metaphorically of a minor fault, Matthew 7:3,4,5; Luke 6:41,42 (twice), in contrast with dokos, "a beam supporting the roof of a building" (see BEAM). In the Sept., Genesis 8:11 .