hobbyhorse
- n a topic to which one constantly reverts
don't get him started on his hobbyhorse - n a child's plaything consisting of an imitation horse mounted on rockers; the child straddles it and pretends to ride
- Pursuing his own hobbyhorse, Senator Patrick Leahy reiterated his call for an independent "truth commission" on Bush-era detention and interrogation policies.
- Huiyuan is a high-profile national brand, and its sale to Coke had become a hobbyhorse for nationalists who often dominate popular Internet chat rooms in China.
- He shot the boy on the hobbyhorse through the chest and head, then fired again and killed the barber.