The least we lost? (6)

I believe the answer is:

lowest

I'm a little stuck... Click here to teach me more about this clue!

'the least' is the definition.
(thesaurus)

'we lost?' is the wordplay.
'we lost' anagrams to 'LOWEST'.
But, I'm not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for lowest that I've seen before include "Owlets at the bottom level" , "Nearest the ground" , "Given maximum reduction" , "Nadir" , "Smallest number" .)

I've seen this clue in the Evening Standard.

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