The Probert Encyclopaedia of Heraldry

WAVED

In heraldry, waved or wavy describes a line outlining an ordinary, etc. which has undulations like waves.
Research Waved

WELT

In heraldry, a welt is a narrow border, as of an ordinary, but not extending around the ends.
Research Welt

WINGED

In heraldry, winged describes a figure as being represented with wings, or having wings, of a different tincture from the body.
Research Winged

WREATH

In heraldry, a wreath is an appendage to the shield, placed above it, and supporting the crest. A wreath generally takes the form of an orle, represents a twist of two rolls of silk, one of the principal metal, the other of the principal colour in the arms.
Research Wreath

WYVERN

In heraldry, a wyvern (or wivern) is a device representing a monster whose fore part is that of a dragon with legs and wings, and the hinder part is in the form of a serpent with a barbed tail.
Research Wyvern