tilt¹ (tĭlt)

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[Middle English tilten, to cause to fall, perhaps of Scandinavian origin.]

verb: tilt·ed, tilt·ing, tilts. 

transitive verb 

1. To cause to slope, as by raising one end; incline: tilt a soup bowl; tilt a chair backward.
2. 1. To aim or thrust (a lance) in a joust.
   2. To charge (an opponent); attack.
3. To forge with a tilt hammer.

intransitive verb 

1. To slope; incline. See synonyms at slant
2. To favor one side over another in a dispute; lean: “His views tilt unmistakably to the Arab position” (William Safire)
3. 1. To fight with lances; joust.
   2. To engage in a combat or struggle; fight: tilting at injustices.

noun 

1. The act of tilting or the condition of being tilted.
2. 1. An inclination from the horizontal or vertical; a slant: adjusting the tilt of a writing table.
   2. A sloping surface, as of the ground.
3. 1. A tendency to favor one side in a dispute: the court's tilt toward conservative rulings.
   2. An implicit preference; a bias: “pitilessly illuminates the inaccuracies and tilts of the press” (Nat Hentoff)
4. 1. A medieval sport in which two mounted knights with lances charged together and attempted to unhorse one another.
   2. A thrust or blow with a lance.
5. A combat, especially a verbal one; a debate.
6. A tilt hammer.
7. New England See seesaw

idioms

at full tilt

At full speed: a tank moving at full tilt.

derivatives

tilt́er

noun

tilt² (tĭlt)

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[Middle English telte, tent, from Old English teld.]

noun 

A canopy or an awning for a boat, wagon, or cart.

transitive verb: tilt·ed, tilt·ing, tilts. 

To cover (a vehicle) with a canopy or an awning.

see·saw (sḗsố)

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[Reduplication of saw¹.]

noun 

1. A long plank balanced on a central fulcrum so that with a person riding on each end, one end goes up as the other goes down. Also called Also called regionally dandle, dandle board, teedle board, teeter, teeterboard, teeter-totter, tilt¹, tilting board
2. The act or game of riding a seesaw.
3. A back-and-forth or up-and-down movement, as of the lead between two contesting parties.

intransitive verb: -sawed, -saw·ing, -saws. 

1. To play on a seesaw.
2. To move back and forth or up and down.