The main device (symbol) in the Passmere blazon is the water bouget. The two main tinctures (colors) are gules and argent.
Gules, the heraldic colour red is very popular, sometimes said to represent “Military Fortitude and Magnanimity”1The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P36. It is usually abbreviated as gu and in the days before colour printing was shown in a system known as hatching by vertical lines 2Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P52. Although it may look like a French word it is normally pronounced with a hard “g” and may be derived either from the Latin gula (throat) or Arabic gule (rose).3A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1847, P154
Argent is the heraldic metal Silver and is usually shown as very pure white. It is also known more poetically as pearl, moon (or luna) 4Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P53. In a sketch or drawing it is represented by plain, unmarked paper 5A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1847, P11.
A wide variety of inanimate objects 6A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P281 appear in coats of arms, so of them still recognisable today, others now rather obscure. The images used are often simplified and stylised, the water bouget is a typical case of the later, such that the casual observer would be hard pressed to discern its function. It represents in fact a yoke with two skins attached to be worn over the shoulder and has been found in coats of arms almost from the beginning of the art. 7A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Water Bouget. Somewhat literally, Wade suggests that their appearance on arms may have been due to a holder who had “brought water to an army or beseiged place”. 8The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P114