Feeling Square?

Today's brain bender will add to that feeling....

Fill in the following word square with one D, one L, one T, two R's, and four O's so that each word can be read across and down.

P O S T
O _ _ _
S _ _ _
T _ _ _

As always, answer to be found later in the comments.

Notice & Update: Today's smartypants is jvh from Showcase of a Shattered Mind! All right angles, that one!

Also, the daily brainbender will now be posted at noon central time (or darn near -- due to my new "working girl" status...) See you tomorrow!