刃
ジン, ニン, は, やいば, き.る, ち, と
blade, sword, edge
JLPT1 G7 S3 F1763
刀
sword/knife + a diagonal mark# emphasizing the flexible *blade* → *edge*. In
扨
and 靱,
刃
takes the form
刄
, while in
牣
, 訒 and 軔 it takes yet another form.
[Full Kanji Etymology List]