tete-beche

tête-bêche  (ttbsh)

adj.

Of, relating to, or being a pair of postage stamps printed with one upside-down in relation to the other, either deliberately or accidentally.

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[French : tête, head (from Old French teste, from Late Latin testa, skull; see tester¹) + bêche (short for obsolete béchevet, double head of a bed, from Old French : bes-, twice from Latin bis; see bis + chevet from Late Latin capitium, opening for the head in a tunic, from Latin, head covering, from caput, capit-, head; see triceps).]