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Beginning
1
English
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1.1
Etymology
1.2
Noun
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tiger in one's tank
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From Wiktionary, the free dictionary
English
[
edit
]
Etymology
[
edit
]
From a postwar advertising campaign for Esso petrol: "Put a tiger in your tank".
Noun
[
edit
]
tiger
in
one's
tank
(
informal
)
enthusiasm
,
energy
,
fervor
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