Being so small, it can get out of traps (5)
I believe the answer is:
sprat
'being so small it can get' is the definition.
I can't judge whether this definition defines the answer.
'of traps' is the wordplay.
'of' indicates anagramming the letters (the answer comes from or 'of' the letters).
'traps' is an anagram of 'SPRAT'.
'out' acts as a link.
Can you help me to learn more?
(Other definitions for sprat that I've seen before include "Small food fish" , "Parts of a very small fish" , "'Set a . . . . . to catch a herring'" , "Strap up the small fish" , "It's set to catch a mackerel" .)