PgSQL problem: How to split strings into rows

[Kynn Jones <kynnjo@xxxxxxxxx>]

I have a table X with some column K consisting of whitespace-separated words.  Is there some SELECT query that will list all these words (for the entire table) so that there's one word per row in the returned table?  E.g.  If the table X is

           K

---------------------

 foo bar baz

 quux frobozz

 eeny meeny

 miny moe

...I want the result of this query to be

 foo

 bar

 baz

 quux

 frobozz

 eeny

 meeny

 miny

 moe

How can I do this?  (I have a slight preference for solutions that will work with version 8.2, but I'm interested in any solution to the problem.)

TIA!

~K