江え戸ど千せん家け流りゅう

Meanings

1

Edo Senke school of tea ceremony

A specific school of Japanese tea ceremony, a branch of the Senke tradition associated with Edo (Tokyo).

current, a sink, flow

表おもて千せん家け
Omotesenke is another major school of tea ceremony, while 江戸千家流 is a branch specifically associated with Edo.
裏うら千せん家け
Urasenke is the largest tea ceremony school; 江戸千家流 is a smaller, distinct lineage.

The name combines 江戸 (Edo, old Tokyo), 千家 (Senke, the tea family), and 流 (school/style). It refers to a tea ceremony lineage that developed in Edo.