Elation about little piggy’s growth? (7)
I believe the answer is:
toenail
'little piggy's growth?' is the definition.
'toenail' can be an answer for 'growth?' (I have seen 'Keratinous growth ' mean 'toenail' so perhaps 'growth' could also mean 'toenail'). I'm unsure of the 'little piggy's' bit.
'elation about' is the wordplay.
'about' indicates anagramming the letters.
'elation' is an anagram of 'TOENAIL'.
Can you help me to learn more?
(Other definitions for toenail that I've seen before include "Digital cover-- 21 across (anag)" , "Digital coverage" , "Growth from foot" , "One's occasionally filed" , "Elation (anag)" .)