1790 J. Wolcot Benevolent Epist. to Sylvanus Urban in (1816) II. 90 How kind! how humble! thus the god of day Deigns to a mudpool to impart his ray!
1869 A. R. Wallace I. xvii. 407 An old mud-pool dried up and hardened.
1990 Aug. 12/2 We..spent the hours..rambling from one bird haunt to another, past flocks of lofty Sandhill Cranes and mudpools alive with Black-bellied Whistling-Ducks.