(anatomy, mostly plural) Any of the large vessels that bring blood to and from the heart, i.e. the superior and inferior vena cava, the pulmonary arteries and veins, and the aorta.

(historical) The strategic rivalry and conflict between the British Empire and the Russian Empire for supremacy in Central Asia, mainly during the 19th century.

(historical, chiefly Northern US) The American Civil War of 1861 to 1865.

plural of great sapphirewing

Pterophanes cyanopterus, a hummingbird of South America.

(Eastern Orthodoxy) A saint who was martyred after suffering great torture.

plural of great auk

plural of great aunt

plural of great house

(geometry) An Archimedean solid that is isogonal and has twenty-six regular faces (twelve square, eight hexagonal and six octagonal).