Alastrina \a-lastri-na, al(a)-st-rina\ as a girl's name is a variant of Alastair (Greek) and Alexandra (Greek), and the meaning of Alastrina is "man's defender".

The baby name Alastrina sounds like Alastriona, Alasdair, Alesta, Alista and Elesteria. Another similar baby name is Asterina.