What does "gutter" mean?

Additional senses

1. 2.Any narrow channel or groove; as, a gutter formed by erosion in the vent of a gun from repeated firing. Gutter member (Arch.), an architectural member made by treating the outside face of the gutter in a decorative fashion, or by crowning it with ornaments, regularly spaced, like a diminutive battlement. -- Gutter plane, a carpenter's plane with a rounded bottom for planing out gutters. -- Gutter snipe, a neglected boy running at large; a street Arab. [Slang] -- Gutter stick (Printing), one of the pieces of furniture which separate pages in a form.
2. 3.To cut or form into small longitudinal hollows; to channel. Shak.
3. 4.To supply with a gutter or gutters. [R.] Dryden.
4. 5.To become channeled, as a candle when the flame flares in the wind.