Incubate (5)
I believe the answer is:
hatch
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">incubate</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that incubate can be written as hatch)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for hatch that I've seen before include "Dream up" , "Of young bird or fish, emerge from egg" , "Think up" , "Trapdoor cover" , "Draw fine lines" .)