Strong's numbers

κάλαμος (G2563)

kálamos

kal'-am-os

of uncertain affinity; a reed (the plant or its stem, or that of a similar plant); by implication, a pen:--pen, reed.

κάλαμος, -ου, ὁ, [in LXX chiefly for קָנֶה, Is 42:3, Ez 40:3 ff., al.;]

a reed: Mt 11:7 12:20(LXX), Lk 7:24; hence, acc. to its various uses,

(a) a reed-pipe, flute;

(b) a reed-staff, staff (cf. IV Ki 18:21, ῥάβδος καλαμίνη): Mt 27:29, 30, 48, Mk 15:19, 36;

(d) a writing reed, a pen: III Jo 13 (cf. Milligan, NTD, 9, 7).†

From G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), in the public domain.

Shown in the King James Version (KJV), whichever translation you read in — it is the text these numbers are tagged against.

Matthew 11:7
And as they departed, Jesus began to say unto the multitudes concerning John, What went ye out into the wilderness to see? A reed shaken with the wind?
Matthew 12:20
A bruised reed shall he not break, and smoking flax shall he not quench, till he send forth judgment unto victory.
Matthew 27:29
And when they had platted a crown of thorns, they put it upon his head, and a reed in his right hand: and they bowed the knee before him, and mocked him, saying, Hail, King of the Jews!
Matthew 27:30
And they spit upon him, and took the reed, and smote him on the head.
Matthew 27:48
And straightway one of them ran, and took a spunge, and filled it with vinegar, and put it on a reed, and gave him to drink.
Mark 15:19
And they smote him on the head with a reed, and did spit upon him, and bowing their knees worshipped him.
Mark 15:36
And one ran and filled a spunge full of vinegar, and put it on a reed, and gave him to drink, saying, Let alone; let us see whether Elias will come to take him down.
Luke 7:24
And when the messengers of John were departed, he began to speak unto the people concerning John, What went ye out into the wilderness for to see? A reed shaken with the wind?
3 John 1:13
I had many things to write, but I will not with ink and pen write unto thee:
Revelation 11:1
And there was given me a reed like unto a rod: and the angel stood, saying, Rise, and measure the temple of God, and the altar, and them that worship therein.