What is the meaning of Supine?

Lying on its back.

Turned facing toward the body or upward: with the thumb outward (palm up), or with the big toe raised relative to the little toe.

A foot in the prone, normal, and supine positions.

Reluctant to take action due to indifference or moral weakness; apathetic or passive towards something.

Inclining or leaning backward; inclined, sloping.

In Latin and other languages: a type of verbal noun used in the ablative and accusative cases, which shares the same stem as the passive participle.

In Swedish, Faroese, Icelandic and Old Norse: a verb form that combines with an inflection of ha/hafa/hava to form the present perfect and pluperfect tenses.

(obsolete terminology) The 'to'-prefixed infinitive in English or other Germanic languages, so named because the infinitive was regarded as a verbal noun and the 'to'-prefixed form of it was seen as the dative form of the verbal noun; the full infinitive.

feminine plural of supino

vocative masculine singular of supīnus

Source: wiktionary.org