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Biological parent means an individual who transferred their genetic material during the conception of a child.

Biological Sex means the physical condition of being male or female, determined by sex chromosomes and recognized on birth certificate

Block hours means the period of time an aircraft operates, from departure to arrival at its destination

Block leave means the time interval encompassing from the beginning of the first off-duty shift to the start of the return-to-duty shift, including weekends and statutory holidays.

Block Section means the railway track length between two immediate block stations.

Blood relatives means your parents, children, siblings, grandparents, aunts, uncles, nieces, nephews, first cousins, or any adopted versions of these relations.

the board of Directors and any committee of the board constituted for the purpose of taking any action or decision contemplated by these Articles;

Boarding home means a personally operated and approved lodging accommodating individuals, unrelated to the operator.

Boarding house means a residential building providing lodging and meals for guests in exchange for a fee.