15d. Sort of teacher unable to control pupils 5-4.
C_O_S-_Y_D
I think this must be CROSS-EYED - but what has it to do with teacher (apart from the fact lots of them are cross?)
Thanks in advance
I think it is trying to make you think of pupils in school, so asks what type of teacher wouldnt be able to control his pupils. answer one who is crosseyed....