To repair; to prepare; to put in order.
- Proper or sound condition.
- Mental or emotional state; spirits: was in fine fettle.
- Metallurgy Loose sand or ore used to line the hearth of a reverberatory furnace in preparation for pouring molten metal.
- Metallurgy To line the hearth of (a reverberatory furnace) with loose sand or ore in preparation for pouring molten metal.