Comb projections (5)
I believe the answer is:
teeth
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">comb projections</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 teeth that I've seen before include "Choppers" , "Food may get stuck in them" , "watchdog needs these" , "Being in your face" , "They're to be found on a gear-wheel" .)