He goes half a mile in a taxi (5)
I believe the answer is:
caleb
'he' is the definition.
'half a mile in a taxi' is the wordplay.
'half a' means to take half the letters.
'in' indicates putting letters inside.
'a taxi' becomes 'cab' ('cab' can be a synonym of 'taxi').
'mile' halved is 'le'.
'le' put inside 'cab' is 'CALEB'.
'goes' acts as a link.
(Another definition for caleb that I've seen is " Chap".)
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