The Collaborative International Dictionary
Rhabarbarate
Rhabarbarate \Rha*bar"ba*rate\,
[From NL. rhabarbarum, an old name of rhubar
See Rhubarb.] Impregnated or tinctured with rhubarb.
--Floyer.
Wiktionary
rhabarbarate
(context obsolete English) impregnate or tinctured with rhubar