butter-bump /butˈər-bump/

The bittern. See bittern¹and bump²

• unicolour
• unicoloured
• unicorn
• unicorn-moth
• unicorns
• unicorn-shell
• unicorn-whale
• unicostate
• unicycle
• unicycles
• unidea'd
• unideal
• unidealism
• unidealisms
• unidealistic
• unidentifiable
• unidentified
• unidiomatic
• unidiomatically
• unidirectional
• UNIDO
• unifiable
• unific
• unification
• Unification Church