bar·ley·corn 
(bärlē-kôrn′)
(bärlē-kôrn′)n.
1. The grain of barley.
2. A unit of measure equal to the length of a grain of barley, or about 1/3 inch (0.85 centimeter).
- postfixal
- postfixial
- postfrontal
- postganglionic
- postglacial
- postgraduate
- posthaste
- post hoc
- posthole
- posthumous
- posthumously
- posthumousness
- posthypnotic suggestion
- postiche
- postilion
- postillion
- postimpressionism
- postimpressionist
- postimpressionistic
- postindustrial
- posting
- Post-it
- postlapsarian
- postlude
- postman