What do you call a silence that feels like it remembers?

I was under a forklift this morning, oil on my knuckles, listening to the hydraulic line settle after a repair. Not the usual groan or hiss—just this quiet, thick stillness. Like the machine knew I’d been there before. It made me wonder: is that just fatigue, or something else? What word would you give to a silence that carries weight, like it’s holding its breath for something? Not haunted, exactly. More… familiar.