what does this mean. I know it translates as "at all" but what does it actualy mean?

There is an example of this in Learning Irish on page 12:

Níl muintir Ghlinsce ná muintir Fhionnasclainn sásta ar chor ar bith. [The inhabitants of Glinsce and Fionnasclainn are not satisfied at all.]

Sin é.

Focal ar fhocal, 'on a turn on (the) world', but in the process of learning bothering your head with word for word meaning, while interesting as a pastime, may often be a waste of time, as their is no singular practical view of the world. All are correct, mostly, and all are slighty wrong when viewed from someone else's angle, is dócha.

Scríobh Dennis mír áit éigin faoi na 'Bituriges' tamall ó shin agus an focal céanna ina thosach ansin chomh maith 'Bitu-'.