Top Definition
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
A extremely talented heavy metal band from Brisbane!!!!!
I went to the Rishathra Gig the other was Awesome!!!!!
by ReginaPhalange89 April 10, 2007
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