The main device (symbol) in the Bawola Glowa blazon is the bull. The two main tinctures (colors) are gules and sable.
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
Sable, the deep black so often found in Heraldry is believed to named from an animal of the marten family know in the middle ages as a Sabellinœ and noted for its very black fur 4A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Sable. In engravings, when colors cannot be shown it is represented as closely spaced horizontal and vertical lines, and appropriately is thus the darkest form of hatching, as this method is known 5Boutell’s Heraldry, J.P. Brooke-Little, Warne, (revised Edition) London 1970, P 26. Although it may seem a sombre tone, and does indeed sometimes denote grief, it is more commonly said to represent Constancy 6The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P35.
Bulls, and their close relations, cows, calves, oxen and the buffalo are relatively recent additions to the art of heraldry (and it is not always possible to distinguish between them in their renderings). 7A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Bull They can be found in a variety of poses and may have horns, hooves and collared in a different colour. The writer Guillim noted that the prescence of a bull could signify ”valour and magnanimity”. 8A Display of Heraldry, J. Guillim, Blome, London, 1679, P117