– Definition: adj.; geological Of or pertaining to lakes.
– Used in a sentence: I prefer deep-water sailing to the lacustrine variety.
– Why: For one thing, it feels good in the mouth. However, I must admit to some self-service with this WtBB, as I am writing a series of stories some of which occur in an island-city surrounded by a lake, and I’m always on the lookout for ways to concisify. And “lacustrine Pormaris” sounds much better than “Pormaris, an island-city surrounded by a lake.” (To me, anyway.)