1. (

• sideline ,
• out_of_bounds

) a line that marks the side boundary of a playing field ;

2. (

• sideline

) an auxiliary line of merchandise ;

3. (

• avocation ,
• by-line ,
• hobby ,
• pursuit ,
• sideline ,
• spare-time_activity

) an auxiliary activity ;

1. (

• sideline

) remove from the center of activity or attention; place into an inferior position; "The outspoken cabinet member was sidelined by the President" ;