Step-child

step′-chīld, n. one who stands in the relation of a child through the marriage of a parent—also Step′-bairn . So Step′-broth′er ; Step′-daugh′ter ; Step′-fa′ther ; Step′-moth′er , or -dame ; Step′-sis′ter ; Step′-son .— n. Step′-coun′try , an adopted country. [A.S. steóp- , as in steóp-módor ; Ger. stieb- ; orig. an adj. sig. bereft .]