It says(Trsor)mtonymie is a rethorical figure (form?)(I'm not familiar with rhetorics)
What's in the sable-sabre texts is that both "sable" and "sabre"
are of disputable origin, but they both serve long.

Some assume that sable comes from cooling the champagne in sand in the old days; others that it comes from a sprinkle of sugar in the glass before pouring the drink,(blast!) giving the glass a sanded appearance, others say it stands for ad fundum or drinking a lot of it. At least sabrage comes clearly from the military and in Napoleontic days.

It felt like an all win game and up to Sylvester midnight; I'll remember the sabrage.