sideline

nouns

a line that marks the side boundary of a playing field
out of bounds, sideline
an auxiliary line of merchandise
sideline
is a type of (narrower)
a particular kind of product or merchandise
"a nice line of shoes"
business line, line, line of business, line of merchandise, line of products, product line
an auxiliary activity
avocation, by-line, hobby, pursuit, sideline, spare-time activity

verbs

remove from the center of activity or attention; place into an inferior position
"The outspoken cabinet member was sidelined by the President"
sideline
is a type of (narrower)
assign to a lower position; reduce in rank
"She was demoted because she always speaks up"; "He was broken down to Sergeant"
break, bump, demote, kick downstairs, relegate