#1
stillness n. [
hush, still] (poetic) tranquil silence; "the still of the night"
. wn #2
stillness n. [
windlessness] calmness without winds
. wn #3
stillness n. [
motionlessness, lifelessness] a state of no motion or movement; "the utter motionlessness of a marble statue"
. wn