| Uni: | 81FC |
| Meaning: | mortar, joint |
| Pny: | jiù |
| Bopo: | ㄐㄧㄡˋ |
| Gr: | jiow |
| Wade: | chiu4 |
| Jyutping: | kau5, kau3 |
| Yale: | káuh, kau |
| Onyomi: | キュウ kyū |
| Kunyomi: | うす usu |
| Jp: | 臼/うす usu |
| Hang: | 절구 jeolgu |
| Hanja: | 구 gu |
Radical 134 or radical mortar meaning "mortar" or "joint" is one of the 29 Kangxi radicals (214 radicals in total) composed of 6 strokes.
In the Kangxi Dictionary, there are 71 characters (out of 49,030) to be found under this radical.
is also the 136th indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China, with being its associated indexing component.
| Strokes | Characters | |
|---|---|---|
| +0 | ||
| +2 | ||
| +3 | ||
| +4 | ||
| +5 | ||
| +6 | (=舄) | |
| +7 | ||
| +8 | ||
| +9 | ||
| +10 | SC (= -> 車) | |
| +12 | ||
| +13 | (= -> 酉) |