It might be helpful in grabbing something to eat (5)
I believe the answer is:
Here is my best explanation:
'it might be helpful in grabbing something to eat' is the definition.
The definition suggests a singular noun which matches the answer.
'it might be' is the wordplay.
'it' becomes 't' (abbreviation. e.g. in 'tis).
'might be' becomes 'alon' (I am not sure about this - if you are sure you should believe this answer much more).
(Other definitions for talon that I've seen before include "Cards left after deal", "bird of prey's claw", "Prey-bird's claw", "Claw of a bird of prey", "Bird of prey's claw", "One hooked on bird", "One may be grabbing", "a gripping one", "Hooked claw; cards left after deal" and "Bird's claw".)