Smooth, v. t. [imp. & p. p. Smoothed p. pr. & vb. n. Smoothing.] To make smooth; to make even on the surface by any means; as, to smooth a board with a plane; to smooth cloth with an iron. Specifically: --
(a) To free from obstruction; to make easy.
Thou, Abelard! the last sad office pay,
And smooth my passage to the realms of day. --Pope.
(b) To free from harshness; to make flowing.
In their motions harmony divine
So smooths her charming tones that God's own ear
Listens delighted. --Milton.
(c) To palliate; to gloze; as, to smooth over a fault.
(d) To give a smooth or calm appearance to.
Each perturbation smoothed with outward calm. --Milton.
(e) To ease; to regulate.
Smooth·ing, a. & n. fr. Smooth, v.
Smoothing iron, an iron instrument with a polished face, for smoothing clothes; a sadiron; a flatiron.
Smoothing plane, a short, finely set plane, for smoothing and finishing work.