つぶる (tsuburu) means “close one's eyes”

More examples

フラッシュが光ると、彼女は思わず目をつぶりました。fu ra sshu ga hika ru to kano jo wa omo wa zu me o tsu bu ri ma shi ta

When the flash went off, she instinctively closed her eyes.

It describes closing the eyelids and preventing the eyes from seeing, either physically or as a way of refusing to face something.

閉じるtojiru: To make something, including the eyes, go from an open state to a closed state.

まぶたを閉じて、視界を遮る。ma bu ta o to ji te shi kai o saegi ru

The native Japanese verb つぶる (tsuburu) developed as a sound variant of つむる (tsumuru), a verb meaning "to close the eyes."

In everyday Japanese, つぶる (tsuburu) can describe deliberately shutting the eyes to rest, concentrate, or avoid seeing something.