Straight home after a hard round (6)
I believe the answer is:
honest
'straight' is the definition.
(similar in meaning)
'home after a hard round' is the wordplay.
I cannot quite understand how this works, but
'home' could be 'nest' (a bird's home) and 'nest' is found within the answer.
'hard' could be 'h' (abbreviation used in pencil classifications) and 'h' is present in the answer.
'round' could be 'o' (o is a circular letter) and 'o' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for honest that I've seen before include "Honorable and sincere" , "Without dissimulation or guile" , "Not cheating, just" , "'Fair-dealing, upright (6)'" , "Virtuous" .)