Radical 185

Radical 185 or radical head meaning "head" is one of the 11 Kangxi radicals composed of 9 strokes.
In the Kangxi Dictionary, there are 20 characters to be found under this radical.
首 is also the 187th indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China.

Sinogram

The radical is also used as an independent Chinese character. It is one of the Kyōiku kanji or Kanji taught in elementary school in Japan. It is a second grade kanji.