Main entry: hobby, avocation, pursuit, sideline, spare-time activity, by-line
Definition: an auxiliary activity
Main entry: sideline
Definition: an auxiliary line of merchandise
Main entry: sideline, out of bounds
Definition: a line that marks the side boundary of a playing field
Main entry: sideline
Definition: remove from the center of activity or attention; place into an inferior position
Usage: The outspoken cabinet member was sidelined by the President