
1) Apparatus for two 2) Back and forth contest 3) Balanced plank 4) Be inconsistent 5) Be waffling 6) Board that children sit on 7) Board that two sit on 8) Board with a couple of seats 9) Board with two seats 10) Dandle 11) Dandle board 12) Daw vehicle 13) Experience highs and lows 14) Flip-flop 15) Fluctuate
Found on
https://www.crosswordclues.com/clue/see-saw

The duo of Ishikawa and Kajiura performed opening and ending themes in several anime series, including .hack//SIGN and .hack//Liminality, two insert songs for Noir, the first ending theme to Mobile Suit Gundam SEED, and the final ending theme to Mobile Suit Gundam SEED Destiny. ==Discography== A list of See-Saw’s works can be found at vocalist C...
Found on
http://en.wikipedia.org/wiki/See-Saw

just like in a play park, but for bikes - go slow in the middle to allow the see-saw to drop gently!
Found on
https://scotland.forestry.gov.uk/activities/mountain-biking/glossary
No exact match found.