Definitions of sideline

n a line that marks the side boundary of a playing field

out of bounds
either of the sidelines in soccer or rugby
Type of:
in games or sports; a mark indicating positions or bounds of the playing area

n an auxiliary line of merchandise

Type of:
business line, line, line of business, line of merchandise, line of products, product line
a particular kind of product or merchandise

n an auxiliary activity

avocation, by-line, hobby, pursuit, spare-time activity
spelaeology, speleology
the pastime of exploring caves
Type of:
interest, pastime, pursuit
a diversion that occupies one's time and thoughts (usually pleasantly)

v remove from the center of activity or attention; place into an inferior position

“The outspoken cabinet member was sidelined by the President”
Type of:
break, bump, demote, kick downstairs, relegate
assign to a lower position; reduce in rank

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