One of the mysteries of the English language finally explained.
1A magic wand inscribed with runes.
2A runic calendar, a clog-almanac. Now historical.
Early 18th century; earliest use found in Philosophical Transactions of the Royal Society of London. From Swedish runstav, with remodelling of the second element after staff and (later) of the first element after rune. Compare also Danish runstav.
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