English edit

 a b c d e f g h  
8        8
7        7
6        6
5        5
4        4
3        3
2        2
1        1
 a b c d e f g h  
Black has a backward pawn on c6.

Noun edit

backward pawn (plural backward pawns)

  1. (chess) A pawn that is unable to advance without being threatened by an enemy pawn and is not defensible by pawns of the same color.

Further reading edit