### Clue: Small stone lodged in baby tooth (8)
### Answer: SPROCKET 
 ### Explanation: Definition: tooth
 S(abbrev. for "small") + [ ROCK(stone/a piece solid material from the surface of the earth) **contained in**(lodged in) PET(to baby/to pamper) ].
Defn:  …, one of many on the rim of a wheel.