Laces occasionally beyond sofa bases, perhaps (7)
I believe the answer is:
seafood
If this is the answer, I'm afraid I cannot explain it.
Can you help me to learn more?
(Other definitions for seafood that I've seen before include "Such as prawns, tuna" , "Edible fish, shellfish etc from the oceans" , "The "surf" of a surf 'n' turf dish" , "Shellfish, marine fish" , "Eaten fish and shellfish" .)