Thanks, Speed! Apparently it's not my minuscule knowledge of Hebrew that's acting up, but my memory. I'd have sworn that a) that word was only in the prayer on the High Holy Days (maybe we didn't do the additional service, or I never went to it), b) it ended with a sin, not a tav (thav, sav, whatever), and c) that the temple I went to used the Sephardic pronunciation (in which case, for anyone actually reading this, the letter thav would be pronounced like a t, not an s).