noun
: acquired ingrained habits or traits as distinguished from innate or instinctive ones
conformity to the discipline of a small society had become almost his second nature — Edith Wharton
noun
: acquired ingrained habits or traits as distinguished from innate or instinctive ones
conformity to the discipline of a small society had become almost his second nature — Edith Wharton
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012