～ころ; ～ごろ
～ころ; ～ごろ · ～koro; ～goro · JLPT N5 · noun
approximately
🕒 koro sounds like o'clock-o: tack it on a time to mean around then
Attach it to a time word: 3時ごろ = around three o'clock. After a noun it usually voices to goro; koro stands alone as in 子供のころ, around the time I was a child. Think of the time rolling loosely, korokoro, never landing on the exact minute.