(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".)
遊
jau6
to walk
to tour
to roam
to travel
to wander
to march
to follow a master
to associate intimately
to have room for play
to play
floating
unattached
amusement
既
gei3
already
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See how to write "遊" with stroke-by-stroke animation