ثَرىً soil, ground; (moist) earth

أيْنَ الثّرَى مِنَ الثّرَيّا what a big difference! what has the ground to do with the Pleiades?!

طَيّبَ اللّهُ ثَرَاهُ may God rest him in peace! God rest his soul!

واراهُ الثّرَى ـ انظر: وارَى