Boyd’s Bible Dictionary:

(shot up). Watchtowers, or fortified posts, were frequent on frontiers and exposed places (Gen. 35:2121And Israel journeyed, and spread his tent beyond the tower of Edar. (Genesis 35:21); 2 Chron. 26:1010Also he built towers in the desert, and digged many wells: for he had much cattle, both in the low country, and in the plains: husbandmen also, and vine dressers in the mountains, and in Carmel: for he loved husbandry. (2 Chronicles 26:10)); around vineyards (Isa. 21:5,8,115Prepare the table, watch in the watchtower, eat, drink: arise, ye princes, and anoint the shield. (Isaiah 21:5)
8And he cried, A lion: My lord, I stand continually upon the watchtower in the daytime, and I am set in my ward whole nights: (Isaiah 21:8)
11The burden of Dumah. He calleth to me out of Seir, Watchman, what of the night? Watchman, what of the night? (Isaiah 21:11)
; Matt. 21:3333Hear another parable: There was a certain householder, which planted a vineyard, and hedged it round about, and digged a winepress in it, and built a tower, and let it out to husbandmen, and went into a far country: (Matthew 21:33)), and for the use of shepherds (Mic. 4:88And thou, O tower of the flock, the strong hold of the daughter of Zion, unto thee shall it come, even the first dominion; the kingdom shall come to the daughter of Jerusalem. (Micah 4:8)). “Tower of Shechem” (Judg. 9:4747And it was told Abimelech, that all the men of the tower of Shechem were gathered together. (Judges 9:47)), evidently a citadel or stronghold. Tower of Babel [BABEL]. “Tower of Siloam,” possibly an observatory (Luke 13:44Or those eighteen, upon whom the tower in Siloam fell, and slew them, think ye that they were sinners above all men that dwelt in Jerusalem? (Luke 13:4)).

Concise Bible Dictionary:

Strong’s Dictionary of Greek Words:

apparently a primary word ("burgh"); a tower or castle
KJV Usage: