Have requirement for lace borders — and sewing implement (6)
I believe the answer is:
needle
'sewing implement' is the definition.
(I've seen this in another clue)
'have requirement for lace borders' is the wordplay.
'have requirement' becomes 'need' (I can't justify this - if you can you should give a lot more credence to this answer).
'for' means one lot of letters go next to another.
'borders' suggests removing the centre (only the edge or border letters remain).
'lace' with its middle removed is 'le'.
'need'+'le'='NEEDLE'
'and' is the link.
Can you help me to learn more?
(Other definitions for needle that I've seen before include "Instrument to annoy" , "Get to" , "Stiff leaf of a conifer" , "Sharp pointed implement" , "be irritating ?" .)