The term 'COMPLETE Shadow' can be broken down into two words, 'COMPLETE' and 'UMBRA'. 'COMPLETE' is an adjective meaning 'having all necessary parts, elements, or steps; entire; whole', while 'UMBRA' is a noun meaning 'the conical shadow from the earth on the moon during a lunar eclipse'. Together, the term 'COMPLETE Shadow' can be interpreted as a full or total shadow, such as the one cast by the Earth on the Moon during a lunar eclipse.