This is the 7803rd most frequent Chinese word.
闽
"闽" refers to the region of Fujian in China or the Min dialect/language spoken there.
Here, 闽 refers to the cultural and historical aspects associated with the Fujian province.
福建是闽文化的发源地。
Fujian is the origin of Min culture.
In this case, 闽 is part of the name of a river (Minjiang), indicating geographical significance.
闽江是一条重要的河流。
The Minjiang River is an important river.
Here, 闽 signifies a type of traditional Chinese opera that originates from the Fujian province.