Nagi (凪) is a Japanese word meaning the state of calm wind (wind speed 0 to 0.2 meters per second). In Japan, the nagi state is the safest time period for fishermen and mariners to take off from shore.
Usage
See Special:Whatlinkshere/Etymology:Nagi (Japanese) for a list of articles using this term.
This is an etymology page: a page detailing the origins of terminology used in the series in regards to real world culture and history.