noun, genitive Gru·is [groo-is] /ˈgru ɪs/. Astronomy.
Origin of Grus
Examples from the Web for grus
The largest bird of the Island is the Cuban sandhill crane (Grus nesiotes).The History of Cuba, vol. 5|Willis Fletcher Johnson
In another part of the jhil a couple of sarus cranes (Grus antigone) are visible.Glimpses of Indian Birds|Douglas Dewar
Grus canadensis (on the fifth of March Anser canadensis also appeared).
Of the Crane (Grus cinerea) we have a great number of bones but of the common Heron not one.Notes on the Fenland|T. McKenny Huges
Illic passeres in atomum pygmeae humilitatis relegati degebant, grus ex opposito in giganteae quantitatis evadebat excessum.Chaucer's Works, Volume 1 (of 7) -- Romaunt of the Rose; Minor Poems|Geoffrey Chaucer