of or relating to or caused by a toxin or poison
useless or profitless activity; using or expending or consuming thoughtlessly or carelessly
a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography)
a part of an animal that has a special function or is supplied by a given artery or nerve
a particular environment or walk of life
a part of a structure having some specific characteristic or function
