അർത്ഥം : A topic to which one constantly reverts.
ഉദാഹരണം :
Don't get him started on his hobbyhorse.
അർത്ഥം : A child's plaything consisting of an imitation horse mounted on rockers. The child straddles it and pretends to ride.
പര്യായപദങ്ങൾ : hobby, rocking horse