WAHOO

I. noun (plural ~s) Etymology: origin unknown Date: 1770 winged elm , II. noun (plural ~s) Etymology: Dakota wãhu, from wã- arrow + hu wood Date: 1857 a shrubby spindle tree ( Euonymus atropurpureus ) of chiefly eastern North America that has purple capsules which in dehiscence expose scarlet-ariled seeds, III. noun (plural ~s) Etymology: origin unknown Date: circa 1900 a large vigorous mackerel ( Acanthocybium solandri ) that is common in warm seas and esteemed as a food and sport fish, IV. interjection Date: circa 1924 chiefly West — used to express exuberance or enthusiasm or to attract attention