Teach your baby the signs for the words bicycle and bike in baby sign language with the following description and videos. Use the same sign for both English words.
Bicycle and Bike
Form the hands into fists. Peddle the hands in front of the chest in the motion of peddling a bicycle.
Acredolo, Linda & Susan Goodwyn. 2009. Baby signs: How to talk with your baby before your baby can talk, 3rd edn. New York: McGraw Hill.