signal caller

Noun signal caller has 2 senses

• signal caller(n = noun.person) field general, quarterback - (football) the person who plays quarterback;
is a kind of back

• signal caller(n = noun.act) field general, quarterback - (American football) the position of the football player in the backfield who directs the offensive play of his team; "quarterback is the most important position on the team"
is a kind of back
is a member of eleven, football team