ratite /ratˈīt/ (ornithology)

1. Having a keel-less breastbone
2. Of the Ratitae /rä-tīˈtē/, flightless birds, such as the ostrich, rhea, emu, kiwi, etc

• cleanser
• cleansers
• cleanses
• clean-shaven
• clean sheet
• clean sheets
• cleansing
• cleansing-cream
• cleansing-creams
• cleansing department
• cleansings
• cleanskin
• cleanskins
• clean-timbered
• clean up
• clean-up
• clean up one's act
• clean-ups
• clear
• CLEAR
• clearable
• clearage
• clearages
• clearance
• clearance cairn