Insert the target for this important shot? (9)
I believe the answer is:
keystroke
'insert the target for' is the definition.
The definition suggests a singular noun which matches the answer.
'important shot?' is the wordplay.
'important' becomes 'key' (similar in meaning).
'shot?' becomes 'stroke' (shot is a kind of stroke).
'key'+'stroke'='KEYSTROKE'
'this' is the link.
Can you help me to learn more?
(Other definitions for keystroke that I've seen before include "One tap" , "It serves to type one letter" , "Single operation on a typewriter" , "Action that's pressing" , "Single depression of a character on a computer terminal" .)