Get round by coach, express (6,5)
I believe the answer is:
bullet train
'get' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'round by coach express' is the wordplay.
'round' becomes 'bullet-' (I've seen this in another clue).
'by' means one lot of letters go next to another.
'coach express' becomes 'train' (both can mean to instruct a sportsperson. I am not sure about the 'express' bit.).
'bullet'+'train'='BULLET TRAIN'
Can you help me to learn more?
(Other definitions for bullet train that I've seen before include "it travels quickly" , "Get to work on it fast!" , "Japanese high-speed transport" .)