Czech 
(chĕk)
(chĕk)adj.
Of or relating to the Czech Republic or its people, language, or culture.
n.
1.
a. A native or inhabitant of the Czech Republic.
b. A person of Czech ancestry.
2. The Slavic language of the Czechs.
[Polish, from Czech Čech.]
- ophthalmological
- ophthalmologically
- ophthalmologist
- ophthalmology
- ophthalmoscope
- ophthalmoscopic
- ophthalmoscopical
- ophthalmoscopy
- -opia
- opiate
- opine
- opinion
- opinionate
- opinionated
- opinionatedly
- opinionative
- opinionatively
- opioid
- opisthobranch
- opisthognathism
- opisthognathous
- opium
- opium poppy
- Oporto
- opossum