(v): bend one's back forward from the waist on down
(v): draw back, as with fear or pain
(v): move so as to change position, perform a nontranslational motion
(v): cross one's eyes as if in strabismus
(v): contort the face to indicate a certain mental or emotional state
(n): a small arch built across the interior angle of two walls (usually to support a spire)
(n): (architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it
A small arch, corbeling, or the like, built across the interior angle between two walls, as in a square tower for supporting the side of a superimposed octagonal spire.