i Register
In some senses, keeno is marked as derogatory, slang. Watch for register when choosing this word.
noun
A pupil who works hard; a swot.
There was a perception that a pupil could be clever, yet not a 'keeno', so long as one's display of ability was not too overt. Such 'cool' cleverness is an attribute for the astute teacher to foster in boys!
Those in the back row are the rebels, who are hoping to get away with messing around or doing some marking. Those who sit at the front are the keenos who have all the answers.
noun
Alternative form of keno (“gambling game”).