In statistics you have the mean, median and mode as a measure of average.
meán = mean (commonly called the average)
airmheán = median (middle item when arranged in order)
mód = mode (item occurring most frequently)
Also have meán lae (mid-day) and meán oíche (midnight)
Can this also be translated as 'what is the middle'? That is to say 'Meán Fómhair' means the middle of fall (I find it easier to remember it as fall rather than autumn, since they sound more similar). And the middle of fall is September.
So could you for example say 'what is in the middle'?