From dictionary.com:
pe·ri·od ( P ) Pronunciation Key (pîr-d)
n.
The full pause at the end of a spoken sentence.
A punctuation mark ( . ) indicating a full stop, placed at the end
of declarative sentences and other statements thought to be
complete, and after many abbreviations.
Don't misunderstand me. or you are simply too stupid to even
understand my two short sentences, which by the way only consists
of two short words.
i.c.y