(n.) a day or one day; (slang) used as part of a prepositional phrase (一日都係) to blame someone (or something or 'a reason') for some negative things that have happened, all because of; owing to; thanks to (e.g. 一日都係你 means "It's all because of you" or "Thanks to you".)
one
single
a (article)
as soon as
entire
whole
all
throughout
"one" radical in Chinese characters (Kangxi radical 1)
also pr. [yāo] for greater clarity when spelling out numbers digit by digit
first (positional)
one part of a fraction, such as 'a' quarter, an eighth
a short duration (when used with a verb)
each
same
dedicated
from the start
1. (possessive particle, literary equivalent of 的de [的]), ‘s 2. him 3. her 4. it 5. subordinate particle 6. this 7. that 8. these 9. those 10. to go to 11. an expletive in a phrase or a sentence with no particular meaning 12. (of road) branch