'long-timer' originates from the combination of 'long' and 'timer', where 'long' refers to an extended period and 'timer' refers to a person or device that measures time.

'long-timer' evolved from the concept of measuring time over extended periods, eventually becoming a term for someone with prolonged experience.

Initially, it referred to someone or something that measures time over long periods, but now it primarily refers to a person with long-standing experience.