Bascule used in a sentence

Bascule in a sentence as a noun

As I worked, I'd watch the boats go by and the bascule bridge go up and down.

Add: so thanks to bascule and michaelt i now realise that the idea is basically increasing the cost to the attacker.

I saw a recent thread on Twitter where he and bascule were talking about it and it still wasn't super clear, but one specific point I recall is that Matrix has a significant amount of metadata stored on the server side which constructs a social graph.