tank
UK: tæŋk | US: tæŋk
n. a large container for holding liquids or gases
n. an armored fighting vehicle with heavy firepower
vt. to store or transport in a tank
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The word "tank" originated in the early 17th century from Portuguese "tanque" or Spanish "tanque," meaning "reservoir" or "pond," likely derived from a pre-Roman Iberian root. Its military sense emerged in World War I (1915) as a code name for the armored vehicle, chosen to disguise its true purpose during development. The word's dual meanings reflect its journey from water storage to battlefield dominance.
The factory uses a large tank to store chemicals safely.
The army deployed three tanks to secure the border.
We need to tank the fuel before the long journey.
The fish swam lazily in the glass tank.
During the war, tanks revolutionized ground combat tactics.