[f. BAIL v.4 + -ER1.] He who or that which bails water out; a man employed to bail out a ship; a utensil used for this purpose, a machine constructed to lift and throw out water from a pit, etc.
1883. Kingston, Paddy Finn, xv. 190. There was no bailer; but I had seized my hat.
1883. Century Mag., July, 330/1. The sand-pump and bailer, employed to take up and hoist out the pulverized rock and water.
1883. Daily News, 15 Sept., 2/7. (Shipping), [Ship] Hardwick half full of water Bailers have been employed.