Link to this page noun: A layer of hard subsoil or clay. Also referred to as caliche. Hard, unbroken surface. A foundation; bedrock. a definite layer of earth which mainly impervious to water. A dry pond. The tough substratum. Identical to Hard pan, under difficult, a. The greater or less securely consolidated detrital product which occasionally underlies a superficial covering of soil. Hence difficult, unbroken ground. the best amount; lowest foundation; a company ground for effort or ascending development: because, rates reach hard-pan. crust or layer of difficult subsoil encrusted with calcium-carbonate happening in arid or semiarid areas View More adjective: the difficult stratum of earth lying beneath the soil; thus, figuratively, the company, considerable, fundamental component or top-notch everything; as, the hard pan of personality, of a matter in dispute, etc. See Pan. Related Sources Definition for "hardpan" A layer of hard subsoil or clay. Also… View More Sentence for "hardpan" Hypernym for "hardpan" Same Context for "hardpan" Variant for "hardpan"