The dictionary defines a fiduciary as "a person to whom property or power is entrusted for the benefit of another." In practice, this means that a fiduciary will always put the client first. For example, if one were to earn more by selling one product or another, a fiduciary would choose the product which most benefits the client, not the one selling the product. Note that stockbrokers have traditionally NOT been held to this standard. Stockbrokers (and other brokers and agents) have been held to a "suitability" standard - a much looser standard. As a Registered Investment Advisor, Meyers Wealth Management is held to this fiduciary standard.
