Mary Ellin, Richard & al.,

There are several historical dictionaries around for tracing earlier and
obsolete meanings of words and expressions. I'm currently using "The Penguin
Dictionary of Historical Slang" by Eric Partridge, Penguin Books 1978, which, by
the way, lists the following:

"- looking-glass. A chamber pot: ca 1620-1830, then dial(ectal). N.B. The
English Dialect   Dictionary (by Joseph Wright, 1896-1905). Beaumont & Fletcher.
Prob.  ex  the attention paid to it by physicians."

Gerard Gusset
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