tri·cy·cle 
(trīsĭk′əl, -sĭ-kəl)
(trīsĭk′əl, -sĭ-kəl)n.
A vehicle, used especially by small children, that has three wheels, one at the front and two at the back, and is usually propelled by pedals.
[French : tri-, three (from Greek tri-; see TRI-) + Greek kuklos, wheel; see CYCLE.]
- specification
- specific epithet
- specific gravity
- specific heat
- specific humidity
- specific impulse
- specificity
- specific performance
- specific resistance
- specific thrust
- specifier
- specify
- specimen
- speciosity
- specious
- speciously
- speciousness
- speck
- speckle
- speckled
- speckled perch
- speckled trout
- specks
- specs
- spectacle