Teach your baby the sign for the words baby and infant in baby sign language with the following description and video. The sign is the same for both English words.
Form the arms into a cradle. Rock the arms back and forth.
Chafin, Suzie, Johnston Bell Grindstaff, & Anne E. Pidano. 2009. Knack baby sign language: A step-by-step guide to communicating with your little one. Guilford, CT: Knack.