0 A piercing noise, light, etc. is very strong and unpleasant. -- acuto, penetrante
1 loud; shrill -- penetrante, acuto
a piercing scream.
2 (of cold weather, winds etc) sharp; intense -- pungente, penetrante
3 looking intently or sharply as though able to see through things -- penetrante
a piercing glance.
piercing eyes