1. favourable circumstance likely to bring success
get/have/provide an advantage, work to your advantage
An 'advantage' is a favourable position or circumstance in relation to others. This could be an advantage by accident or as the result of effort and hard work. If you have 'an advantage' you are more likely to succeed. This noun can be used in professional and social contexts. Similar meaning expressions include, 'to have the upper hand', 'to have a head start', and 'a running start'.