Lab container (4)
'lab container' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for vial that I've seen before include "Small container for liquids" , "Small bottle used for medicines, laboratory work, etc" , "Ampoule" , "Small container for liquid medicine" , "Small glass container" .)
'lab container' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for flask that I've seen before include "Glass container" , "Portable drink container" , "Container for liquids" , "Small pocket bottle" .)