1) Insect 2) Springtail 1) Springtail 
[n] - any of numerous minute wingless primitive insects possessing a special abdominal appendage that allows the characteristic nearly perpetual springing pattern
springtail noun any of numerous minute wingless primitive insects possessing a special abdominal appendage that allows the characteristic nearly perpetual springing pattern; found in soil rich in organic debris or on the surface of snow or water
belonging or pertaining to the insect order Collembola, comprising the springtails.