A long, long time
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">a long long time</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for eons that I've seen before include "Times" , "Divisions of geological time" , "Vast ages" , "Endless periods" , "Long periods of time - noes have it" .)
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">a long</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">long time</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for ages that I've seen before include "Long periods" , "Rock of - - (hymn)" , "Awfully long time" , "Epochs" , "A long time (colloq.)" .)
(Other definitions for decades that I've seen before include "Ten-year spells" , "10-year periods" , "Periods of 10 years" , "Ten year periods" .)