Select a tool (4)
I believe the answer is:
pick
I believe this is a double definition.
'select' is the first definition.
(picking is a kind of selecting)
'a tool' is the second definition.
(I know that pick is a type of tool)
(Other definitions for pick that I've seen before include "The best tool" , "Pluck" , "Select - ground breaker" , "hacker?" , "option" .)