In this Part of this Act—
the expression " relative " means a grandparent, brother, sister, uncle, or aunt, whether by consanguinity or affinity, or in consequence of adoption, and, in the case of an illegitimate child., a person who would be so related if the child were legitimate;
the expression " adoption " means adoption under the Adoption of Children Act, 1926, or any corresponding enactment applicable to Scotland or Northern Ireland;
the expression " legal guardian " means a person appointed according to law to be the guardian of a child, either by deed or will, or by order of a court of competent jurisdiction; and
the expression " place of safety " means a remand home, public assistance institution, or police station, or any hospital, surgery or other suitable place, the occupier of which is willing temporarily to receive a child.