An anglerfish of the family Lophiidae.

Underlying water or body of water, for example in an aquifer or the deep ocean. / (fishing) A type of lure which lies beneath the water surface.

pig iron suitable for making Bessemer steel

(mathematics) Any member of a certain group of polynomials remarkable in that the number of crossings of the x-axis in the unit interval does not go up as the degree of the polynomials goes up.