What's the meaning of the hat like character on top of 尔 According to https://en.wiktionary.org/wiki/%E5%B0%94#Chinese

It is

this character https://en.wiktionary.org/wiki/%E2%BA%88

It simply means knife but the wiktionary entry is very short.

Google translate says that it's meaning is indeed knife and it's read Dao.

However,

According to http://zhongwen.com/bushou.htm



The hat character is ru that means enter. So which one is right?
Don't think it's a knife. Maybe a handle??

尔 variant of 爾｜尔

warping-wheel-er 尔爾 ěr (weaving not my strong point, not really sure what that is)

尔 seems to be the top part of 爾

Original meaning 本义: Meaning (orig) a rolled up spindle (now) meaning you.

你
Character decomposition 字形分解 [?]: 
Compound 你 older 儞

from person-left-ren 亻人 rén and 

related phonetic warping-wheel-er 尔爾 ěr.