'Tower' may predate Greek itself — possibly from a pre-Indo-European Mediterranean substrate language.
A tall, narrow building or structure, either freestanding or forming part of a building such as a church or castle.
From Old English torr (rock, crag, tower), and Old French tor (tower), both from Latin turris (tower, high building), from Greek tyrsis or tyrris (tower, walled city), likely borrowed from a pre-Greek Aegean or Anatolian language — the same substrate that gave Greek tyrannos (tyrant, foreign lord). The Latin turris was reinforced in English by Old French tor after the Norman Conquest of 1066, giving the modern form tower. Latin turris also appears in place names: Turin (Torino) was Roman Augusta Taurinorum, and the Tower of London
The chess piece called a 'rook' in English is called 'torre' (tower) in Spanish, Italian, and Portuguese. The rook's castle-like shape comes from a misinterpretation of the Persian 'rukh' (chariot), which Arab artisans carved to resemble a fortification because they had no tradition of war chariots.