Dictionary.net

• A thin, pointed nail, with a heavy flaring head, for securing a horsehoe to the hoof; a horsehoe nail.

2010 - New Age Dictionary Database
By Oddity Software

• A thin, pointed nail, with a heavy flaring head, for securing a horsehoe to the hoof; a horsehoe nail.

1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.