fettle

Short definition from Wiktionary

Noun

1. 1
   A state of physical condition; kilter or trim.
2. 2
   One's mental state; spirits.
3. 3
   Sand used to line a furnace.
4. 4
   A seam line left by the meeting of mould pieces.
5. 5
   The act of fettling.
6. 6
   A person's mood or state, often assuming the worst.

Verb

1. 1
   To sort out, to fix, to mend, to repair.
2. 2
   To make preparations; to put things in order; to do trifling business.
3. 3
   To line the hearth of a furnace with sand prior to pouring molten metal.
4. 4
   To be upset or in a bad mood.
5. 5
   To remove (as by sanding) the seam lines left by the meeting of two molds.
6. 6
   To machine away seam lines or more generally to make small adjustments to a component or machine to improve its fit or operation.
7. 7
   To prepare.