A biblical name meaning 'excellence' or 'pre-eminence', also used as a given name in modern times.
From Hebrew 'Yithro' composed of 'yithra' (excellence) and the definite article. In the Bible, Jethro was the father-in-law of Moses.
Jethro Tull, the 18th-century agricultural innovator, became so famous for his mechanical seed drill that there's a famous rock band named after him—and most people think it's a person! His invention basically started the agricultural revolution that fed modern civilization.
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