[cf. hoopoop s.v. HOOPOE] = HOOP sb.3 1.
1694. Motteux, Rabelais, V. ix. 41. O my word this is a filthy Whoophooper. Tush, speak softly, said Ædituus, he has a pair of Ears What then, returnd Panurge, so hath a Whoopcat.