1) Big Wheel 2) Bike for a tyke 3) Early mode of transportation 4) Early transport 5) Early wheels 6) First vehicle, often 7) First wheels 8) Kid carrier 9) Kiddie carrier 10) Kiddie transport 11) Kiddie vehicle 12) Little three-wheeler 13) Ride for Elmo 14) Sidewalk racer 15) Three-wheeled Harley 16) Three-wheeler Found on https://www.crosswordclues.com/clue/trike