Small kid (4)
(Other definitions for tyke that I've seen before include "Cheeky child or small dog" , "Young urchin" , "Cheeky tot" , "Uncouth child" , "Small child or unpleasant person" .)
'small kid' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tot that I've seen before include "finger, possibly" , "two fingers, perhaps" , "Small amount of spirits" , "Dram; small child" , "Small drink - young child" .)