←
Old English tūr (inherited)
←
Old English tor (mention)
←
Old English torr (mention)
←
Middle English tour (inherited)
←
Middle English tur (mention)
←
Middle English tor (mention)
←
Middle English touren (inherited)
←
Middle English torren (mention)
←
Old French tour (derived)
←
Old French toer (mention)
←
Old French tor (mention)
←
West Frisian toer (cognate)
→
Cebuano tawer (borrowed)
→
Japanese タワー (borrowed)
→
Tok Pisin taua (derived)