W4H4A1L1E1B3A1C3K5
23 points
WHALEBACK is validvalid
[n WHALEBACKS]
a kind of steamboat used on the Great Lakes to carry grain, etc. having a rounded upper deck [n -S]
[n WHALEBACKS]
a kind of steamboat used on the Great Lakes to carry grain, etc. having a rounded upper deck [n -S]