Medicine injector (7)
I believe the answer is:
syringe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">medicine injector</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for syringe that I've seen before include "It injects or extracts fluids" , "one's prepared for a shot" , "A jab is administered through this" , "Injector" , "Means of injection" .)