One agile moving to catch ball? (6)
I believe the answer is:
goalie
'ball?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'one agile moving to catch' is the wordplay.
'one' becomes 'o' (I've seen this in other clues).
'moving' indicates anagramming the letters (letters are moved around).
'to catch' means one lot of letters goes inside another.
'agile' is an anagram of 'galie'.
'o' going inside 'galie' is 'GOALIE'.
Can you help me to learn more?
(Other definitions for goalie that I've seen before include "Football team member" , "one saves" , "number one" , "Football player" , "Keeper (colloq.)" .)