French "in take" A piece or pawn that is unprotected and exposed to capture.

Literally "in take" - able to be captured for free. A piece is en prise if it can be captured but is not guarded.

[from French, "in a position to be taken", often italicized] En prise describes a piece or pawn exposed to a material-winning capture by the opponent. This is either a hanging piece, an undefended pawn, a piece attacked by a less valuable attacker, or a piece or pawn defended insufficiently. For instance, 1.e4 Nf6 2.Nf3? leaves White's e-pawn en prise.