Definition of fettled:
(n) :
A state of physical condition; kilter or trim.
(n) :
One's mental state; spirits.
(v) :
(especially Northern England) To sort out, to fix, to mend, to repair.
(v) :
(intransitive) To make preparations; to put things in order; to do trifling business.
(v) :
(transitive) To line the hearth of a furnace with sand prior to pouring molten metal.
(v) :
(transitive, engineering) To machine away seam lines or more generally to make small adjustments to a component or machine to improve its fit or operation.