tor 
(tôr)
(tôr)n.
1. A high rock or pile of rocks on the top of a hill.
2. A rocky peak or hill.
[Middle English, from Old English torr, probably of Celtic origin.]
- synchronicity
- synchronism
- synchronistic
- synchronistical
- synchronistically
- synchronization
- synchronize
- synchronized swimming
- synchronizer
- synchronous
- synchronously
- synchronous motor
- synchronousness
- synchronous orbit
- synchronous rotation
- synchrony
- synchrotron
- synchrotron radiation
- synclinal
- syncline
- syncopal
- syncopate
- syncopation
- syncopator
- syncope