1028510 jmdict A [id=2284462]
Ｓ；ｓ
エス[gai1]
[1][n]
  S; s
[2][n]
  south
[3][n]
  sulfur
  [see=1552840・硫黄[1]]
[4][pref]
  nth year in the Shōwa era (1926.12.25-1989.1.7)
  [see=1349820・昭和[1]]
[5][n]
  small
[6][n]
  second
[7][n][fld=gramm]
  subject
  [see=1325420・主語[1]]
[8][n]
  sadist; sadistic
  [see=2211550・Ｍ[3]]
[9][n]
  sister (female partner in a homosexual relationship)
[10][n]
  [note="likely from スーパー or スペシャル"]
  S rank (usu. top rank on a SABCDEF scale); S grade; best class