空

adjective: empty, hollow, vacant
空

3 candidate readings were extracted from Wiktionary for 空, but they split across two distinct pos/etymology blocks on the source page. This entry covers the 'empty; hollow; air; sky' sense, which attests 2 of the 3 candidates (kang1, kong1) — kang3 belongs to the other sense and is dropped here; see the separate entry for that sense. Genuine Chaozhou colloquial form not yet confirmed by a speaker.