cut off (down), poll, shave, ((sheep-)) shear(-er)

Concise Bible Dictionary:

The skull or head, but used to express a person (Num. 1:2-222Take ye the sum of all the congregation of the children of Israel, after their families, by the house of their fathers, with the number of their names, every male by their polls; 3From twenty years old and upward, all that are able to go forth to war in Israel: thou and Aaron shall number them by their armies. 4And with you there shall be a man of every tribe; every one head of the house of his fathers. 5And these are the names of the men that shall stand with you: of the tribe of Reuben; Elizur the son of Shedeur. 6Of Simeon; Shelumiel the son of Zurishaddai. 7Of Judah; Nahshon the son of Amminadab. 8Of Issachar; Nethaneel the son of Zuar. 9Of Zebulun; Eliab the son of Helon. 10Of the children of Joseph: of Ephraim; Elishama the son of Ammihud: of Manasseh; Gamaliel the son of Pedahzur. 11Of Benjamin; Abidan the son of Gideoni. 12Of Dan; Ahiezer the son of Ammishaddai. 13Of Asher; Pagiel the son of Ocran. 14Of Gad; Eliasaph the son of Deuel. 15Of Naphtali; Ahira the son of Enan. 16These were the renowned of the congregation, princes of the tribes of their fathers, heads of thousands in Israel. 17And Moses and Aaron took these men which are expressed by their names: 18And they assembled all the congregation together on the first day of the second month, and they declared their pedigrees after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, by their polls. 19As the Lord commanded Moses, so he numbered them in the wilderness of Sinai. 20And the children of Reuben, Israel's eldest son, by their generations, after their families, by the house of their fathers, according to the number of the names, by their polls, every male from twenty years old and upward, all that were able to go forth to war; 21Those that were numbered of them, even of the tribe of Reuben, were forty and six thousand and five hundred. 22Of the children of Simeon, by their generations, after their families, by the house of their fathers, those that were numbered of them, according to the number of the names, by their polls, every male from twenty years old and upward, all that were able to go forth to war; (Numbers 1:2‑22); Num. 3:4747Thou shalt even take five shekels apiece by the poll, after the shekel of the sanctuary shalt thou take them: (the shekel is twenty gerahs:) (Numbers 3:47); 1 Chron. 23:3,243Now the Levites were numbered from the age of thirty years and upward: and their number by their polls, man by man, was thirty and eight thousand. (1 Chronicles 23:3)
24These were the sons of Levi after the house of their fathers; even the chief of the fathers, as they were counted by number of names by their polls, that did the work for the service of the house of the Lord, from the age of twenty years and upward. (1 Chronicles 23:24)
).

Strong’s Dictionary of Hebrew Words:

Transliteration:
gazaz
Phonic:
gaw-zaz’
Meaning:
a primitive root (akin to 1468); to cut off; specifically to shear a flock or shave the hair; figuratively to destroy an enemy
KJV Usage:
cut off (down), poll, shave, ((sheep-)) shear(-er)