upperclassmen is upperclassman's Plural Form

upperclassman

US [ˌʌpərˈklæsmən]
UK [ˌʌpə(r)ˈklɑːsmən]
  • n.〈美〉(高等学校的)高班生
  • Web学长
Plural Form:upperclassmen  
n.
1.
〈美〉(高等学校的)高班生

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard