If 'cake' necessarily entailed icing
you wouldn't have chosen it as your example.

If no-one had any significant experience of cakes without icing, the word 'cake' would necessarily entail icing.
( Flapjack I spay a little mare for you, Tue 23 Jun 2009, 22:01, archived)

That's what I'm saying.
But doesn't that seem weird and wrong?
( Comma, Tue 23 Jun 2009, 22:04, archived)

No. Why?
Only because you choose something you know and then give it a "weird and wrong" definition.

If all blee consists of crawt and fleem, then blee without fleem is just crawt. Or fleemless blee.
( Flapjack I spay a little mare for you, Tue 23 Jun 2009, 22:07, archived)