Go like a Transit? (6)
I believe the answer is:
vanish
'go' is the definition.
(thesaurus)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for vanish that I've seen before include "Disappear or fade from sight" , "Disappear (in a puff of smoke?)" , "Go missing" , "Disappear without trace" , "Evanesce" .)