i Register
In some senses, loo is marked as figuratively, obsolete, slang, UK, US. Watch for register when choosing this word.
ADJ
public | outside | gents', ladies', men's, women's
VERB + LOO
go to, use
After lunch, she went to the loo and was gone for ten minutes.
be desperate for, need
After the long car journey, the children desperately needed the loo.
flush, flush sth down
Sarah accidentally flushed her contact lens down the loo this morning.
LOO + NOUN
paper, roll
PREP
in the ~, on the ~