cilice /silˈis/

1. Haircloth
2. An undergarment worn by penitents, orig made of haircloth, but now usu a band of pronged wire

cilicious /-ishˈəs/ adjective

• opt in
• opting
• option
• optional
• optionality
• optionally
• option clause
• option clauses
• optioned
• optioning
• options
• optoacoustic
• optoelectronic
• optoelectronics
• optologies
• optologist
• optologists
• optology
• optometer
• optometers
• optometric
• optometrical
• optometries
• optometrist
• optometrists