大おお倭やまと

Meanings

Archaic name for Japan, used in ancient texts. Not used in modern Japanese.

Refers to the ancient Yamato province, corresponding to present-day Nara Prefecture. Historical term.

大和やまと
大和 is the more common historical spelling for Yamato, while 大倭 is an older variant with the same reading やまと in some contexts, but here specifically read as おおやまと.
日本にほん
日本 is the modern standard name for Japan, while 大倭 is an archaic name no longer in use.

大おお倭やまと
Historical kanji spelling for the ancient name of Japan or Yamato region. Rare in modern use.
大日本おおやまと
Alternate historical spelling, also read as だいにほん or だいにっぽん in other contexts. For this reading, it is archaic.

A historical spelling of 大和, with 倭 used to write the name やまと and 大 giving the expanded reading おおやまと. It denoted Yamato and, by extension, Japan.