Vial (7)
I believe the answer is:
ampoule
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">vial</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ampoule that I've seen before include "Vessel holding liquid for injection" , "Glass capsule" , "Glass container for hypodermic dose" , "Small container" , "Sealed glass container for injection solution" .)