Noah Webster
Infix
INFIX', verb transitive [Latin infixus, infigo; in and figo, to fix.]
1. To fix by piercing or thrusting in; as, to infix a sting, spear or dart.
2. To set in; to fasten in something.
3. To implant or fix, as principles, thoughts, instructions, as, to infix good principles in the mind, or ideas in the memory.