Wept about hesitation on alloy (6)
I believe the answer is:
pewter
'alloy' is the definition.
(I know that pewter is a type of alloy)
'wept about hesitation on' is the wordplay.
'about' indicates an anagram.
'hesitation' becomes 'er' (sound made while hesitating - um, er).
'on' says to put letters next to each other.
'wept' with letters rearranged gives 'pewt'.
'pewt'+'er'='PEWTER'
(Other definitions for pewter that I've seen before include "Grey alloy of tin and lead, makes mugs etc." , "Tin/copper (utensils)" , "Grey alloy of tin and lead, often in mug" , "An alloy of tin with a small amount of other metal" , "Tin alloy for utensils" .)