six·teen·pen·ny nail 
(sĭkstēn-pĕn′ē)
(sĭkstēn-pĕn′ē)n.
A nail 3.5 inches (8.9 centimeters) long.
[From its original price per hundred.]
- circular mil
- circular saw
- circulate
- circulating library
- circulation
- circulative
- circulator
- circulatory
- circulatory system
- circum-
- circumambience
- circumambiency
- circumambient
- circumambiently
- circumambulate
- circumambulation
- circumboreal
- circumcise
- circumciser
- circumcision
- circumduction
- circumference
- circumferential
- circumfix
- circumflex