eight·pen·ny nail 
(ātpĕn′ē)
(ātpĕn′ē)n.
A nail 2.5 inches (6.4 centimeters) long.
[From the former price per hundred.]
- biological weapon
- biologist
- biology
- bioluminescence
- bioluminescent
- biolysis
- biolytic
- biomagnetism
- biomagnification
- biomarker
- biomass
- biomaterial
- biomathematical
- biomathematician
- biomathematics
- biome
- biomechanical
- biomechanically
- biomechanics
- biomedical
- biomedical engineering
- biomedicine
- biometeorology
- biometric
- biometrical