A phrase, composed of 照る (teru) + 照る (bōzu, “a monk”). Literally, "shine, shine monk".
照る照る坊主 (hiragana てるてるぼうず, romaji teru teru bōzu)
- A small, traditional handmade doll made of white paper or cloth that Japanese farmers began hanging outside of their windows on a string. This folk amulet is supposed to have magical powers to bring good weather, and to stop or prevent a rainy day.