WordWeb Online

1. Willing to be taught, led, supervised or directed
   "the docile masses of an enslaved nation"
    
2. Ready and willing to be taught
   "docile pupils eager for instruction";
   - teachable
    
3. Easily handled or managed
   "a gentle old horse, docile and obedient";
   - gentle

See also: educable, manipulable, meek, obedient, sheepish, sheeplike, tame, tamed, tractable, yielding

Antonym: stubborn, unteachable