Tack in three directions (3)
I believe the answer is:
sew
This clue is a double definition.
'tack' is the first definition.
(I know that tack is a more specific form of sew)
'three directions' is the second definition.
'in' is the link.
(Other definitions for sew that I've seen before include "Stitch with needle and thread" , "Tack" , "Fasten with needle and thread" , "Work with needle and thread" , "Fasten with stitches" .)