DEW line 
(d, dy)
(d, dy)n.
A line of radar stations near the 70th parallel across the North American continent, maintained by the United States and Canada and intended to give advance warning of approaching enemy aircraft and missiles.
[D(istant) E(arly) W(arning).]
- changeful
- changefully
- changefulness
- change hands
- changeless
- changeling
- change mind
- change off
- change of heart
- change of life
- change (one's) mind
- change one's mind
- change (one's) tune
- change one's tune
- changeover
- changer
- change ringing
- change tune
- changeup
- Changjiang
- Changjiang
- Changsha
- Changzhou
- channel
- channel