My Bathroom Sink Has One Of Those Stoppers Where You Press It Down...

[sandyRoe]

...to close it , and press again to open it.

Over time it has become partially blocked and it takes a long time for the water to drain away.

How can I remove the stopper so that I can clear the pipe?

[Buenchico]

Take your pick . . .

[Buenchico]

. . . or perhaps . . . 

[chelle7272]

Mine comes out if you give it a twist and pull it out. It can be a bit fiddly gtting it back on though.

[Old_Geezer]

When I had a similar issue I found one could unscrew it.

[Old_Geezer]

It's a basin, by the way. 😉

[dustypuss]

Just pull it up.

[sandyRoe]

What's the difference between a sink and a basin?

[chelle7272]

Generally sinks are bigger and in the kitchen, basins are smaller and in bathrooms.

I call them both sinks though :)