Sixty minutes (4)

I believe the answer is:
hour
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sixty minutes</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for hour that I've seen before include "When it cometh, so doth the man!" , "A 24th of a day" , "Period of day" , "See 20" , "See 12" .)