Top definition
1. An extremely powerful tsunami. Usually found in the sea near Japan's east coast. Can kill many people and cause a nuclear panic.

2. How Godzilla was formed.

3. A forceful force.
Geez! That slap to the face was so powerful it felt like a Jap-nami!
by TheOneWhoWrites May 24, 2011
Get the mug
Get a Jap-nami mug for your mama Yasemin.