(Hebrew, dag On, the fish On). The idol of the Philistines; half woman and half fish. (See Atergata.)
Dagon his name; sea-monster, upward man And downward fish; yet had his temple high Rear'd in Azotus dreaded through the coast Of Palestine, in Gath and Ascalon, And Accaron and Gaza's frontier bounds.
Milton: Paradise Lost, book i. 402.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894