अंगूठा
angootha
A thumb is the short, thick finger on your hand that helps you hold things.
You say 'thumb' like this: th-uh-m.
The word 'thumb' comes from the Old English word 'þuma', which means the same thing.
The word 'thumb' in Hindi is 'अंगूठा' (Aṅgūṭhā).