rubber band 
noun
A loop of rubber for holding things together.When his back was turned, she pulled out a paper clip and a rubber band, took careful aim, and fired....
- I picked it up, took off the rubber band that held it together, and began to thumb through it.
- He carried a wooden cane that was splintered at the handle so he had a rubber band to keep it together.
- purple amaranth
- purple bacterium
- purple beech
- purple-born
- purple broomrape
- purple chamber
- purple-colored
- purple-coloured
- purple coneflower
- purple coot
- purple cow-wheat
- purple death
- purple drank
- purple-dyeing
- purple emperor
- purple fever
- purple finch
- purple-fish
- purple gallinule
- purple gland
- purple grackle
- purple gromwell
- purple groundsel
- purple haze
- purple heart