means A white crystalline mineral, sodium chloride, used to season and preserve food and essential to life — and, figuratively, sharp wit or hard-won experience.

from From Old English 'sealt,' tracing back to Proto-Germanic '*saltom' and an ancient Proto-Indo-European root '*sal-' that scattered salt across half the world's languages — Latin 'sal,' Greek 'hals,' Russian 'sol.' That same root seasons words you'd never suspect: 'salary' (Roman soldiers were possibly paid in or for salt — the link is real, though the famous 'paid in salt' tale is part folklore), 'sauce,' 'salad,' and 'sausage,' all things touched by salting. A small word with deep brine in its veins.