spring·tail 
(sprĭngtāl′)
(sprĭngtāl′)n.
Any of numerous small wingless hexapods of the class Collembola, having the ability to jump by means of a forked appendage on the abdomen that acts as a spring. Also called collembolan.
- common touch
- commonweal
- commonwealth
- Commonwealth of Independent States
- Commonwealth of Nations
- common year
- commotion
- commove
- communal
- communalism
- communalist
- communalistic
- communality
- communalize
- communally
- Communard
- commune
- commune
- communer
- communicability
- communicable
- communicableness
- communicably
- communicant
- communicate