Definition of "double-headed"

Having two heads.  quotations  examples

(numismatics) Of a coin, having a head on both sides, especially when counterfeited by being constructed from two separate coins.  examples

(rail transport) Of a train, hauled by two locomotives.  examples

(film) Synonym of sepmag (“having separately recorded picture and soundtrack”)  examples

simple past and past participle of double-head  examples