ens

noun2

1. •
   An entity or being; an existing thing, as opposed to a quality or attribute.

   • Forms sphered in fire with trembling light array'd, / Ens without weight, and substance without shade […]. — 1791
2. •
   (historical) Something supposed to condense within itself all the virtues and qualities of a substance from which it is extracted; an essence, an active principle.

   • Here he states that there are five ‘active principles’ – the five Enses or entia – that influence our bodies and give rise to disease […] — 2006

noun1

1. •
   Initialism of enteric nervous system.

noun1

1. •
   Abbreviation of ensign (a military rank).