Mangala: means, in general usage, anything regarded as 'auspicious' 'lucky', or a 'good omen'. Against the contemporary superstitions notions about it, the Buddha, in the Mahā-mangala Sutta Sn., w. 258 ff., set forth 36 'blessings' that are truly auspicious, i.e. conducive to happiness, beginning with the 'avoidance of bad company' and ending with a 'serene mind'. It is one of the most popular Suttas in Buddhist countries, and a fundamental text on Buddhist lay ethics.
Maha Thera Nyanatiloka. Manual of Buddhist Terms and Doctrines, Buddhist Publication Society, first edition 1952.