An unsealing tool (6)
I believe the answer is:
opener
(Other definitions for opener that I've seen before include "First going in to bat" , "First goal in game" , "First event in a series" , "batsman facing new ball" , "Leading cricketer" .)
I believe the answer is:
opener
(Other definitions for opener that I've seen before include "First going in to bat" , "First goal in game" , "First event in a series" , "batsman facing new ball" , "Leading cricketer" .)