Definition of lull:
(n) :
a period of rest or soothing; an extended pause between
sets of
waves
"about 2 hours in, a hella long lull cleared everyone out, and then it started getting a little more consistent and pushing chest ta neck high — 808surfer.com forum"
(v) :
to cause to rest by soothing influences; to compose; to calm; to soothe; to quiet