How to get day of week? - Mailing list pgsql-novice

I'm sure I'm missing something obvious, but this is the novice list, so
here goes:

Is there a function to return the day-of-week for a given time/datestamp?

What I'm looking for is something like:

select day(current_timestamp);

That would return the current day of the week (e.g. Monday/Tuesday...)

Thanks,

-Lloyd