"Bend" can have several meanings:

• A bend can refer to a curve or corner in anything that would otherwise extend in a straight line, like a road or a rope.
• A bend is a general term for a knot used to tie two ropes together.
• In heraldry, a bend is a colored band that runs from the upper left (as seen by the viewer) corner of the shield to the lower right.
• The bends can mean decompression sickness.
  • In this context, The Bends is also an album by Radiohead.
• Round the bend is a slang expression for mad or eccentric.