The main device (symbol) in the Achannay blazon is the roebuck. The two main tinctures (colors) are azure and argent.
The bright, strong blue color in Heraldry is known in English as azure, and similarly in other European languages – azul in Spanish, azurro in Italian and azur in French. The word has its roots in the Arabic word lazura, also the source of the name of the precious stone lapis lazuli 1A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Azure. Despite this, those heralds who liked to associate colours with jewels chose instead to describe blue as Sapphire. According to Wade, the use of this colour symbolises “Loyalty and Truth” 2The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P36.
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) 3Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P53. In a sketch or drawing it is represented by plain, unmarked paper 4A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1847, P11.
Many different forms of the deer, hart, roe-buck and other appear in rolls of arms, though often of similar appearance. The precise choice of animal possibly being a reference to the family name. 5A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Deer If there is any symbology intended it is probably that of enjoyment of the hunt, deer in all its form being a popular prey. 6The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P30