Sex between alien species, usually within the confines of a ritual to make an interspecial agreement.
Jan offered rishathra to seal the trade agreement with the alien embassador.
by riccer July 31, 2003
1 more definition
A extremely talented heavy metal band from Brisbane!!!!!
I went to the Rishathra Gig the other night.......it was Awesome!!!!!
by ReginaPhalange89 April 10, 2007