五ご輪りん大たい会かい

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Meanings

1

noun

Formal term for the Olympic Games, often used in official contexts. 五輪 alone is more common in everyday speech.

five

輪wheel, ring, circle

大large, big

会meeting, meet, party

五ご輪りん
五輪 is the common abbreviation for the Olympics, used in everyday conversation and media. 五輪大会 is more formal and refers specifically to the event as a whole.
オリンピック
オリンピック is the most common term for the Olympics in modern Japanese. 五輪大会 is a more formal, kanji-based alternative.

五輪 (five rings) refers to the Olympic symbol, combined with 大会 (large meeting/tournament). The term is a direct reference to the Olympic rings.