Related Clues:

• Like zoo animals
• Confined
• Imprisoned
• Caged
• North Star
• Locked up
• Locked (up)
• "I Know Why the ___ Bird Sings"
• Fancy house opening?
• Constrained, with 'up'
• Abbr. on a certain elevator button
• House opening?
• In captivity, in a way
• Confined, with ''up''
• Like a zoo animal