The Probert Encyclopaedia of Heraldry

UNDE

In heraldry, unde or onde describes an ordinary or division line as being waving or wavy.
Research Unde

UNGULED

In heraldry, unguled describes an animal depicted with hoofs when they are of a different tincture from the body.
Research Unguled

URDEE

In heraldry, urdee or urdy means pointed. A cross-urdee is one in which the extremities are drawn to a sharp point instead of being cut straight.
Research Urdee

URVANT

In heraldry, urvant means turned or bowed upwards.
Research Urvant