Koosa Squash? exactly what kind of squash is it?

It's a large summer squash - similar to a large zucchini, or yellow squash.

Koosa Squash

Koosa is the Arabic word for a courgette (also used in Hebrew slang, as the Hebrew word - kishoo - is quite similar). Koosa Makhshi is a courgette hollowed and stuffed with a mixture of rice, minced meat and herbs.

Koosa meanz Squash! coz I know arabic. it'z the type thatz normally small & lite green.

Its a pale green colored zuchinni. They are usually used in Maashi (stuffed vegetables), The stuffing mixture is rice mixed with cooked onion/tomatoe sauce, fresh minced dill and well cooked minced meat. Zucchinni, bell peppers and eggplants can be stuffed. First scoop out the centers of the vegies. Stuff, then simmer in tomatoey soup or chicken stock. Use lots of spices in the stuffing!

Zucchini

It is the green one, not yellow