Tower

Tower [towr (Saxon) or torra (Saxon), turris (Latin), tour (French), torre (It. and Sp.)]
a place of defence.

Definition taken from The Universal Etymological English Dictionary, edited by Nathan Bailey (1736)

Tithing-Men * Hollow Tower [in Fortification]
Taˊmy
Teˊllers [in the Exchequer]
Teˊrrae-filius [i. e. the Son of the Earth]
Thinking
Thiˊrdendeal
Thor
Thripples
Thrithing, or Trithing
Tin-worm
Tithing-Men
Tower
Hollow Tower [in Fortification]
Towers [in Coat Armour]
Towˊering long sought [in Cattle]
Train
Train [in Watch-work]
Transpaˊrent Bodies [with Philosophers]
Trinity-House
Trundle-tail
Twivil
Vacuiˊties [with Physicians]