1. en passant - Noun
2. en passant - Adjective
3. en passant - Adverb
(chess) a chess pawn that is moved two squares can be captured by an opponent's pawn commanding the square that was passed
incidentally; in the course of doing something else
Source: WordNethe made this remark in passing Source: Internet
A capturing piece replaces the opponent piece on its square, except for an en passant capture. Source: Internet
An en passant capture is sometimes marked with the notation "e.p." A move that places the opponent's king in check usually has the notation "+" added. Source: Internet
A piece is captured (or taken) when an attacking enemy piece replaces it on its square ( en passant is the only exception). Source: Internet
En passant captures are indicated by specifying the capturing pawn's file of departure, the "x", the destination square (not the square of the captured pawn), and (optionally) the suffix "e.p." indicating the capture was en passant. Source: Internet
In the 16th and 17th centuries, there were differences of opinion concerning rules such as castling, pawn promotion, stalemate, and en passant. Source: Internet