Wiktionary
queen pawn
n. (context chess English) A pawn on the queen's file; i.e., the d-file.
Usage examples of "queen pawn".
While the audience stood hushed, Boris Melnikov reached across the board and played the queen's gambit decline opening, moving his queen pawn two squares.
He'd used the classical queen's gambit: Decline opening, moving the queen pawn two squares.