sec·ond–string 
/ˌsɛkəndˈstrɪŋ/ adjective
always used before a noun /ˌsɛkəndˈstrɪŋ/ adjective chiefly US, sports : not used as one of the regular players on a team
▪ a second-string quarterback — compare first-string
▪ a second-string quarterback — compare first-string
— second stringer noun, plural ∼ -ers [count] chiefly US
