Pimple (4)
(Other definitions for acne that I've seen before include "Skin problem, mainly of teenagers" , "Skin rash" , "Skin spots" , "Skin affliction" , "Cane for the teenager?" .)
'pimple' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for lump that I've seen before include "Large piece without definite shape" , "Large piece without defined shape" , "growth" , "Plum in a compact shapeless mass" , "Small heap, swelling" .)
'pimple' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for spot that I've seen before include "Notice; sign of acne" , "Discern - mark" , "Espy; mark" , "See 5" , "moral flaw" .)
'pimple' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for zit that I've seen before include "Spot (colloq., mostly US)" , "Pimple (US)" , "Spot or pimple" .)