Or uncertain affinity; a reed (the plant or its stem, or that of a similar plant); by implication, a pen -- pen, reed.
a. a reed: Matthew 11:7; Matthew 12:20 (from Isaiah 42:3); Luke 7:24.
b. a staff made of a reed, a reed-staff (as in 2 Kings 18:21): Matthew 27:29f, 48; Mark 15:19, 36.
c. a measuring reed or rod: Revelation 11:1; Revelation 21:15f (Ezekiel 40:3-6; Ezekiel 42:16-19).
d. a writer's reed, a pen: 3 John 1:13; (see Gardthausen, Griech. Palaeogr., p. 71f).