—n.
1 a loud high-pitched piercing cry expressing fear, pain, extreme fright, etc.
2 the act of emitting a scream.
3 colloq. an irresistibly funny occurrence or person.
—v.
1 intr. emit a scream.
2 tr. speak or sing (words etc.) in a screaming tone.
3 intr. make or move with a shrill sound like a scream.
4 intr. laugh uncontrollably.
5 intr. be blatantly obvious or conspicuous.
6 intr. colloq. turn informer.
Etymology: OE or MDu.
Useful english dictionary. 2012.