line backer

Noun line backer has 2 senses

• line backer(n = noun.person) linebacker - a defensive football player who takes a position close behind the linemen;
is a kind of football player, footballer

• line backer(n = noun.act) linebacker - (American football) the position of a defensive football player who plays close behind the line of scrimmage;
is a kind of back
is a member of eleven, football team