Go Left, Young Person

loo

What does this mean? Apple’s built-in dictionary helps a bit:
loo 1 |lu?| nounBrit. informal
a toilet. [ as modifier ] : loo paper.
ORIGIN 1940s: many theories have been put forward about the word’s origin: one suggests the source is Waterloo, a trade name for iron cisterns in the early part of the century; the evidence remains inconclusive.
loo 2 |lu?| noun [ mass noun ] a gambling card game, popular from the 17th to the 19th centuries, in which a player who fails to win a trick must pay a sum to a pool…
… but no one tells us why it is found to the left, in downtown Balmain, Sydney, Australia.