Tabernac is one of the worst curse words you can use in French Canada. French Canada has a strong tradition of Roman Catholicism and this sacriligious word takes the word "tabernacle" in vain.
"tabernac' de fou", "c't'une tabernac d'affaire, là"
by Doctor Livingstone May 14, 2005
1 more definition
Fr. Canadian. An expression of surprise, warning ('look out!), astonishment, or disgust. Alternate spelling of tabarnak.
(To a wayward horse from the cart driver.) 'Whoa! Whoa! Tabernac!'
by userboy May 16, 2013