I’m annoyed at Angus for pursuing record time (5)
I believe the answer is:
epoch
'time' is the definition.
(I know that epoch is a type of geologic time)
'i'm annoyed at angus for pursuing record' is the wordplay.
I cannot really understand how this works, but
'record' could be 'ep' (abbreviation for extended play record) and 'ep' is present in the answer.
The remaining letters 'och' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for epoch that I've seen before include "Historical period" , "years" , "remarkable time" , "Particular historic time period" , "Major division or period of history" .)