Train me to build a tower (7)
I believe the answer is:
minaret
'a tower' is the definition.
(minaret is a kind of tower)
'train me to build' is the wordplay.
'to build' is an anagram indicator.
'train'+'me'='trainme'
'trainme' with letters rearranged gives 'MINARET'.
(Other definitions for minaret that I've seen before include "Mosque's tower" , "tower in the Middle East" , "Mosque spire" , "tower in Istanbul, say" , "Building" .)