fib

noun4

1. •
   (informal) A lie, especially one that is more or less inconsequential.

   • Ask me no questions, and I'll tell you no fibs. — 1773
2. •
   (informal) The fibula.
3. •
   A kind of experimental poem where the number of syllables in each line is the next succeeding Fibonacci number.
4. •
   (informal, rare) A liar.

   • "Oh! you dreadful fib," said Flora. — 1861

verb2

1. •
   (informal) To lie, especially more or less inconsequentially.
2. •
   (no longer used) To punch, especially a series of punches in rapid succession; to beat; to hit; to strike.

   • Fib the cove's quarron in the rumpad for the lour in his bung; beat the fellow in the highway for the money in his purse. — 1785

noun3

1. •
   Initialism of focused ion beam.
2. •
   Initialism of flying inflatable boat.
3. •
   (offensive) Initialism of fucking Illinois bastard.