General Definition: 1. Of a person, the action of repeatedly going up close to or hitting a large flat object, such as a wall or obstacle, or any action or any object directly or indirectly associated with this, especially playing close to the net in tennis. As a Noun: 1. A physical object that a person is unable to go over, go around or pass through; a non-physical thing (such as a law, rule or policy) that stops someone doing something. English = barrier, obstacle. 2. As a Verb or Adjective: 1. Of a tennis player, to play close to the net. 2. Of a person, to come across an obstacle created by a physical barrier or a barrier which is social or psychological that stops you doing what you want. Idiomatic English = hit a brick wall.