Lies about British board (5)
I believe the answer is:
table
'board' is the definition.
(both can mean food)
'lies about british' is the wordplay.
'lies' becomes 'tale' (I am not sure about this - if you are sure you should believe this answer much more).
'about' means one lot of letters goes inside another.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'tale' placed around 'b' is 'TABLE'.
Can you help me to learn more?
(Other definitions for table that I've seen before include "Working, eating, surface" , "Propose to a meeting" , "Record" , "Dummy (bridge); food" , "Flat surface on legs" .)