noun
loud snore; loud snoring
Refers to the act or sound of snoring loudly. Often used in phrases like 大いびきをかく (to snore loudly).
父は毎晩大いびきをかく。
My father snores loudly every night.
隣の部屋から大いびきが聞こえてきた。
I could hear loud snoring from the next room.
いびき is the general word for 'snore' or 'snoring', while 大いびき specifically means a loud snore.
Compound of 大 (おお, 'big, loud') and いびき ('snore'). The reading おおいびき is a straightforward combination.