From BiblePortal Wikipedia

King James Dictionary [1]

PED'IGREE, n. probably from L. pes,pedis, foot.

1. Lineage line of ancestors from which a person or tribe descends genealogy.

Alterations of surnames--have obscured the truth of our pedigrees.

2. An account or register of a line of ancestors.

The Jews preserved the pedigrees of their several tribes.

Webster's Dictionary [2]

(1): ( n.) A line of ancestors; descent; lineage; genealogy; a register or record of a line of ancestors.

(2): ( n.) A record of the lineage or strain of an animal, as of a horse.

International Standard Bible Encyclopedia [3]

ped´i - grē ( התילּד , hı̄thyallēdh , "to show one's birth"): The English word "pedigree" occurs only once in the Bible, according to the concordance. In   Numbers 1:18 , it is said: "They declared their pedigrees"; that is, they enrolled or registered themselves according to their family connections. The same idea is expressed frequently, employing a different term in the Hebrew, by the common phrase of Chronicles, Ezra and Nehemiah, "to reckon by genealogy," "to give genealogy," etc. (compare  1 Chronicles 7:5 ,  1 Chronicles 7:9;  Ezra 2:62 ff;   Nehemiah 7:64 ). These last passages indicate the importance of the registered pedigree or genealogy, especially of the priests in the post-exilic community, for the absence of the list of their pedigrees, or their genealogical records, was sufficient to cause the exclusion from the priesthood of certain enrolled priests.