Tun. A cask; the rebus of the final syllable TON in many surnames. See Rebus.
Tynes. Branches of a stag’s antlers. See Attires.
Ulster. See Baronet and Herald.
Undy, Undée. Wavy: [No. 38, C].
Unguled. Hoofed.
Unicorn. A well-known fabulous animal, famous as the sinister supporter of the Royal Shield of England.
Union Jack. The National Ensign of the United Kingdom of Great Britain and Ireland, fully described in [Chapter XVII.] It is borne on an inescutcheon upon the arms of the Duke of Wellington as an augmentation.
Uriant. A term said to be applied to a fish when it swims in a vertical position, head downwards. The reverse of Hauriant, q.v.
Vair. A Fur: Nos. [61], [62], [63].
Vane. See Fan.