of an phrase2 •(old-fashioned) Indicates a more or less habitual activity during the given part of the day.Of an evening, I like to play chess. i.e., On some evenings, I like to play chess.Of a morning, they would work in their garden. i.e., They generally worked in their garden in the morning. •(old-fashioned) Having the same.The two main players were roughly of an age.
