Thank you very much for your help.
Why does 'line' refer to 'fill'?
Interesting question. :up: I'm not sure...
Thinking about it, it occurs to me that the idea of 'grease' may be involved.
Greasy can be used of an immoral person - 'a slippery customer'. When you bribe someone you 'grease their palm'.
Back to 'lining'; when you make a cake, you
line the tin with greaseproof paper (or baking foil, or something like it) and then grease it (so that the cake-mix doesn't stick - in my experience this rarely works, but people still do it ;-)).
Perhaps you line your pockets - as if they were cake-tins - and to stop stuff sticking to them you grease the lining (metaphorically, that is)...
This sounds a bit contrived to me, but I can't think of another link between
lining and
filling..
b