| make a retreat from an earlier commitment or activity | make a retreat from an earlier commitment or activity |
| move to a rearward position; pull towards the back | move to a rearward position; pull towards the back |
| stretch back a bowstring (on an archer's bow) | stretch back a bowstring (on an archer's bow) |
| use a surgical instrument to hold open (the edges of a wound or an organ) | use a surgical instrument to hold open (the edges of a wound or an organ) |
| pull back or move away or backward | pull back or move away or backward |