u+237c right angle with downwards zigzag arrow
Known as right angle with downwards zigzag arrow, angle with down zig-zag arrow, \rangledownzigzagarrow, and ⍼, no one knows what is meant to represent or where it originated from. Section 22.7 Technical Symbols from the Unicode Standard on the Miscellaneous Technical block doesn't say anything about it.
Who doesn't love a good what-the-hell-is-this-glyph story?