1. a toy or figurine with a head that moves back and forth on a spring or pivot when touched or when the base is moved
Usage: common in sports merchandise and collectibles
2. a person who nods in agreement without thinking critically; someone who blindly agrees with others
Usage: informal; often used critically

Examples

• The baseball fan collected bobbleheads of all his favorite players.
• She had a bobblehead of the team's star pitcher on her desk.
• He was just a bobblehead in the meeting, agreeing with everything the boss said.
• The toy bobblehead's head wobbled whenever you tapped the base.
• Don't be a bobblehead—think for yourself and ask questions.
• The sports store was giving away bobbleheads at the stadium entrance.
• His bobblehead collection included figures from three different decades.