Extremely excited; in a high, pumped-up state (mimetic/onomatopoeic).
試合前で彼はギンギンにテンションが上がっていた。
He was all pumped up before the match.
パーティの音楽がギンギンで会場は盛り上がった。
The party music was blasting and the venue got hyped.
朝からコーヒーを飲んで、頭がギンギンだ。
I had coffee from the morning and I'm feeling really wired.
A stabbing or throbbing painful sensation (e.g., headache); painfully sharp/stinging.
昨夜遅くまで勉強したせいで朝から頭がギンギンする。
Because I studied late last night, I have a pounding/stinging headache this morning.
冷たい風が入ってきて目がギンギンに痛む。
A cold gust came in and my eyes sting painfully.
Extremely cold (often used of drinks like beer); ice-cold.
暑い日はギンギンに冷えたビールが一番だ。
On hot days, an ice-cold beer is the best.
冷蔵庫から出したばかりのビールがギンギンに冷えている。
The beer just taken from the fridge is ice-cold.
Noisily and sharply (of chirping, barking, etc.); a high, piercing sound.
夜中に犬がギンギンと吠えて眠れない。
A dog is barking loudly and sharply in the middle of the night, I can't sleep.
朝早くから小鳥がギンギン鳴いてうるさい。
Birds are chirping loudly and piercingly from early morning; it's noisy.