Fettle \Fet"tle\, v. t. [OE. & Prov. E., to fettle (in sense 1), fettle, n., order, repair, preparation, dress; prob. akin to E. fit. See Fit, a.]

1. To repair; to prepare; to put in order. [Prov. Eng.]

--Carlyle.

2. (Metal.) To cover or line with a mixture of ore, cinders, etc., as the hearth of a puddling furnace.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Fettle \Fet"tle\, v. i. To make preparations; to put things in order; to do trifling business. [Prov. Eng.]

--Bp. Hall.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Fettle \Fet"tle\, n. The act of fettling. [Prov. Eng.]

--Wright.

In fine fettle, in good spirits.

Source: Webster's Revised Unabridged Dictionary (1913)