nail

Boyd’s Bible Dictionary:

(hold, claw). Nails of captives to be pared (Deut. 21:1212Then thou shalt bring her home to thine house; and she shall shave her head, and pare her nails; (Deuteronomy 21:12)). Ordinary metal nail (1 Chron. 22:33And David prepared iron in abundance for the nails for the doors of the gates, and for the joinings; and brass in abundance without weight; (1 Chronicles 22:3)); stylus (Jer. 17:11The sin of Judah is written with a pen of iron, and with the point of a diamond: it is graven upon the table of their heart, and upon the horns of your altars; (Jeremiah 17:1)); stake (Isa. 33:2020Look upon Zion, the city of our solemnities: thine eyes shall see Jerusalem a quiet habitation, a tabernacle that shall not be taken down; not one of the stakes thereof shall ever be removed, neither shall any of the cords thereof be broken. (Isaiah 33:20)); tent-peg wood or metal (Ex. 27:1919All the vessels of the tabernacle in all the service thereof, and all the pins thereof, and all the pins of the court, shall be of brass. (Exodus 27:19); Judg. 4:21-2221Then Jael Heber's wife took a nail of the tent, and took an hammer in her hand, and went softly unto him, and smote the nail into his temples, and fastened it into the ground: for he was fast asleep and weary. So he died. 22And, behold, as Barak pursued Sisera, Jael came out to meet him, and said unto him, Come, and I will show thee the man whom thou seekest. And when he came into her tent, behold, Sisera lay dead, and the nail was in his temples. (Judges 4:21‑22)).

Concise Bible Dictionary:

For the temple “David prepared iron in abundance for the nails for the doors of the gates, and for the joinings” (1 Chron. 22:33And David prepared iron in abundance for the nails for the doors of the gates, and for the joinings; and brass in abundance without weight; (1 Chronicles 22:3)); but apparently gold nails were used for some parts of the interior (2 Chron. 3:99And the weight of the nails was fifty shekels of gold. And he overlaid the upper chambers with gold. (2 Chronicles 3:9)). The tent pegs were also called nails, though made most probably of hard wood, and perhaps pointed with iron. It was with a tent peg that Jael killed Sisera (Judg. 4:21-2221Then Jael Heber's wife took a nail of the tent, and took an hammer in her hand, and went softly unto him, and smote the nail into his temples, and fastened it into the ground: for he was fast asleep and weary. So he died. 22And, behold, as Barak pursued Sisera, Jael came out to meet him, and said unto him, Come, and I will show thee the man whom thou seekest. And when he came into her tent, behold, Sisera lay dead, and the nail was in his temples. (Judges 4:21‑22)). In houses in the East many articles are hung upon nails for safety, hence “a nail in a sure place,” denotes security and is figurative of the safety of anything that depends upon God (Isa. 22:23,2523And I will fasten him as a nail in a sure place; and he shall be for a glorious throne to his father's house. (Isaiah 22:23)
25In that day, saith the Lord of hosts, shall the nail that is fastened in the sure place be removed, and be cut down, and fall; and the burden that was upon it shall be cut off: for the Lord hath spoken it. (Isaiah 22:25); Compare Eccl. 12:1111The words of the wise are as goads, and as nails fastened by the masters of assemblies, which are given from one shepherd. (Ecclesiastes 12:11); Zech. 10:44Out of him came forth the corner, out of him the nail, out of him the battle bow, out of him every oppressor together. (Zechariah 10:4)).

Strong’s Dictionary of Hebrew Words:

Number:
4548 (find all occurrences in KJV Bible)
Transliteration:
macmer
Phonic:
mas-mare’
Meaning:
or micmer {mis-mare'}; also (feminine) macmrah {mas-mer-aw'}; or micmrah {mis-mer-aw'}; or even masmrah (Eccles. 12:11) {mas-mer-aw'}; from 5568; a peg (as bristling from the surface)
KJV Usage:
nail