En passant
WordNet

adverb


(1)   Incidentally; in the course of doing something else
"He made this remark in passing"

noun


(2)   (chess) a chess pawn that is moved two squares can be captured by an opponent's pawn commanding the square that was passed
WiktionaryText

Adverb


en passant

  1. in passing; incidentally
  2. of a move in which a pawn may be captured, by another pawn, as if it had moved one square from its initial position instead of two
 
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