Noun formed from a verb (6)
I believe the answer is:
gerund
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">noun formed from a verb</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for gerund that I've seen before include "Verb form functioning as a noun" , "Verb form used as a noun" , "Verbal noun ending in 'ing'" , "Noun formed from a verb - red gun (anag)" , "Noun formed from a verb -- nudger (anag)" .)