gosing
The space left by a missing tooth, a chip off the blade of a knife, etc.
Ilo. gusíng 'harelip, notched at the rim, a missing tooth'
Someone (mang-) causes a chip or notch on a tooth or knife (-an).
A tooth, a knife, etc., (ma--an) has been chipped, notched.
Nagosingan nyipen ko.
My tooth had been chipped.