臼 means 'mortar'

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Strokes : 6    Radical number: 134    Frequency: 2392   JLPT: N1    Usefulness: 5    Challenge set: 20    Grade: 8   Intermediate lesson: -    Beginner lesson: -   Begins 6 words   Used in 30 words   Used in 296 names   Component in 31 kanji (2 Jōyō)
Jōyō (常用)
   うす a mortar
Kun    うすづ
Newly added to the Joyo set (probably because it's a radical), 臼 gives us an entry point into the earthy world of grinding crops. Through 臼 we learn about the mortar and pestle, the original (and best?) way of making mochi (and the basis for a saying about how men and women need each other). The essay also introduces medical terms, including one for "molar." After all, "mortars" in the mouth grind food!
This is a synopsis of Joy o' Kanji's in-depth essay on 臼
Essay 1987 on 臼 (mortar; millstone; "mortar" radical) covers this radical. If you're interested (: 652) in beating things to a pulp, this is the radical for you!
⿰  E    yo = to yell / say hi  
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In the most useful 10,000 words in Japanese, 臼 is used 3 times, read 2 ways.
Across all words in Japanese, 臼 is used 30 times, read 2 ways.
キュウ : 18 words FIND ALL
(click the word to view an additional 1 reading)
うす : 12 words FIND ALL
stone mortar; millstone; quern
(click the word to view an additional 1 form)
Henshall: Joy o' Kanji : 1987  Key to Kanji:

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キュウ   うす a mortar   
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yo = to yell / say hi
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Search results include information from a variety of sources, including Kanshudo (kanji mnemonics, kanji readings, kanji components, vocab and name frequency data, grammar points), JMdict (vocabulary), Tatoeba (examples), Enamdict (names), KanjiVG (kanji animations and stroke order), and Joy o' Kanji (kanji and radical synopses). Translations provided by Google's Neural Machine Translation engine. For more information see credits.
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