underwear

n. clothes worn under the outer garments and next to the skin, underclothing

Undergarments, also called "underwear", "underpants," "lingerie", or "panties" (undergarments for women), or sometimes "intimate clothing", and "pants" or "knickers" in British English, are clothes worn next to the skin, usually under other clothes. They are also known as 'Katch' or 'Katchie' and worn under Indian traditional clothing.
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Noun
1. undergarment worn next to the skin and under the outer garments
(synonym) underclothes, underclothing
(hypernym) undergarment
(hyponym) BVD's

n. underwear, underclothing

(n.)
That which is worn under the outside clothing; underclothes.