An Etymological Dictionary of Astronomy and Astrophysics

A massive, young, and hot star that is moving quickly through space. Runaways are probably propelled through space from a binary star when its companion has exploded as a supernova, or ejected from a stellar cluster by the dynamical interactions in the system.

Etymology (EN): → run; away, from O.E. aweg, earlier on weg “on from this (that) place;” → star.

Etymology (PE): Setâré, → star; gorizân present participle of goriz-, gorixtan “to escape; to flee, run away;” Mid.Pers. virextan;
Proto-Iranian *vi-raik, from vi- “apart, asunder”

• *raik; Av. raek- “to leave, set free, let off;” Mid./Mod.Pers. reg/rig (in mordé-rig “inheritance”); Skt. ric- “to leave,” rinakti “gives up, evacuates;” Gk. leipein “to leave;” L. linquere “to leave;” from PIE *linkw-, from
  *leikw- “to leave behind” (cf. Goth. leihvan; O.E. lænan “to lend;” O.H.G. lihan “to borrow;” O.N. lan “loan”).