Tenka San Nasu refers to the following three Nasu (eggplant-shaped tea caddy): Tsukumo Nasu (literally, Nasu of gray hair), Matsumoto Nasu (Nasu originally owned by Shuho MATSUMOTO), and Fuji Nasu (literally, Nasu of Mt. Fuji).
天下三茄子（てんかさんなす）とは、九十九髪茄子、松本茄子、富士茄子の三つのことである。