tee·ter·board 
(tētər-bôrd′)
(tētər-bôrd′)n.
Northeastern US
Northeastern US
1. See seesaw.
2. A board with one end raised so that when an acrobat or tumbler jumps onto it, another performer standing on the opposite end is tossed into the air.
- on (one's) own initiative
- on one's own initiative
- on (one's) radar/radar screen
- on one's radar screen
- on one's radar screen
- on (one's) soapbox
- on one's soapbox
- on (one's)/the way
- on (one's) /the way
- on one's the way
- on (one's) toes
- on one's toes
- on (one's) uppers
- on one's uppers
- on one's way
- on one/the onehand
- on order
- on own
- on own account
- on own ground
- on own hook
- on own initiative
- on pain of
- on paper
- on pins and needles