Sweal \Sweal\, v. i. [imp. & p. p. Swealed; p. pr. & vb. n. Swealing.]

[OE. swelen to burn, AS. swelan; akin to G. schwelen to burn slowly, schw["u]l sultry, Icel. sv[ae]la a thick smoke.]

To melt and run down, as the tallow of a candle; to waste away without feeding the flame. [Written also swale.]

--Sir W. Scott.

Source: Webster's Revised Unabridged Dictionary (1913)