1. Of members of a team; not substitutes 
2. Being a regular member of a team
   "first-string players"

See also: primary, regular

• apparentness
• apparition
• apparitional
• appeal
• appeal board
• appealable
• appealing
• appealingly
• appealingness
• appeals board
• appeals court
• appear
• appearance
• appearing
• appeasable
• appease
• appeasement
• appeaser
• appeasing
• appellant
• appellate
• appellate court
• appellation
• appellative
• appellee