cross-staff
noun
ˈkrȯs-ˌstaf 
: an instrument formerly used at sea for taking the altitude of a celestial body
Word History
First Known Use
1582, in the meaning defined above
- pock
- pock neuk
- pock nook
- pock pudding
- pock scab
- pock-arred
- pocked
- pocket battleship
- pocket beach
- pocket billiards
- pocket bird
- pocket book
- pocket boom
- pocket borough
- pocket bread
- pocket calculator
- pocket chronometer
- pocket conveyor
- pocket door
- pocket dry rot
- pocket edition
- pocket editions
- pocket gopher
- pocket judgment