Smallest amount (5)
'smallest amount' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for minimum that I've seen before include "The least of smallest amount possible" , "Lower limit" , "Lowest value" , "Nadir" , "Lowest point" .)
'smallest amount' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for least that I've seen before include "Steal (anag)" , "Smallest (in significance)" , "Smallest in amount or degree" , "Most slight" , "Smallest, slightest" .)
(Other definitions for fewest that I've seen before include "Smallest number" , "The lowest number" , "most opposite" , "Least abundant" , "The least number" .)