n. (Zool.) (a) The cutlass fish. (b) A carangoid fish (Caranx gallus, or Caranx crinitus) having the anterior rays of the soft dorsal and anal fins prolonged in the form of long threads. [ 1913 Webster ]
[sureddofinsukyatto] (n) threadfin scat (Rhinoprenes pentanemus, species of Western Pacific spadefish found from Papua New Guinea to northern Australia)