Bin broken biro tip (3)
I believe the answer is:
nib
'biro tip' is the definition.
'nib' can be an answer for 'tip' (I have seen 'Tip of pen ' mean 'nib' so perhaps 'tip' could also mean 'nib'). I am not sure about the 'biro' bit.
'bin broken' is the wordplay.
'broken' indicates anagramming the letters.
'bin' with letters rearranged gives 'NIB'.
Can you help me to learn more?
(Other definitions for nib that I've seen before include "Pen-point" , "Writing point of old pen" , "Pen's point" , "Pen-tip" , "Pen end" .)