Infants unbottled (4)
I believe the answer is:
tots
'infants' is the definition.
(I've seen this in another clue)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for tots that I've seen before include "Sailors' drams" , "Babies" , "Little children" , "little people" , "Finds the sum" .)