1. underwrap - Noun
2. underwrap - Verb
(medicine) A lightweight foam that is applied to the skin to reduce irritation before wrapping with supportive tape.
(medicine) A sheath that surrounds a limb and which is used under a cast.
(sewing) The portion of a garment that is overlapped by another portion, such as the hidden part of a wrap skirt or the edge that holds buttons which is hidden when a garment is buttoned up.
(fishing) An optional wrap that goes under the guide wrap on a fishing rod.
An undergarment that consists of a cloth wrapped around the body.
To provide with an underwrap.
To provide with a wrapping that will subsequently be covered or wrapped by something else.
To wrap the underside of something.
To underlap.
To wrap such that the wrapping does not go all the way to the edge.
To provide with insufficient wrappings.
Source: en.wiktionary.org