If you want a trophy, start climbing higher (3)
I believe the answer is:
cup
'if you want a trophy' is the definition.
I can't judge whether this defines the answer.
'start climbing higher' is the wordplay.
'start' indicates taking the first letters.
'higher' becomes 'up'.
The initial letter of 'climbing' is 'c'.
'c'+'up'='CUP'
Can you help me to learn more?
(Other definitions for cup that I've seen before include "Trophy, drink" , "Trophy; drinking vessel" , "McCarthy, Walker or Maguire" , "Container to drink from - prize" , "Prize; vessel" .)