當

verb: ought; should, to regard as; to treat as, just at (the time of)
當

2 candidate readings from Wiktionary — genuine Chaozhou colloquial form not yet confirmed by a speaker. Split from the 4 given candidates (deng1, deng3, dang3, dang1) into two sense-specific entries by tone: this entry covers the tone-1 senses (ought; to regard as; just at).