Having turned tide, Tom skipped (7)
I believe the answer is:
omitted
'skipped' is the definition.
(I've seen this before)
'having turned tide tom' is the wordplay.
'having turned' indicates anagramming the letters (letters turned into something else).
'tide'+'tom'='tidetom'
'tidetom' is an anagram of 'OMITTED'.
(Other definitions for omitted that I've seen before include "Disregarded" , "Skipped" , "Hairdressing" , "Musical aptitude" , "not mentioned" .)