Rétrancher
Rétrancher is a French verb that carries two main senses, related through the notion of withdrawal behind a defensive or restricted position. In military or strategic language, it designates the act of taking shelter behind fortifications or entrenched positions, or of withdrawing to a safer, defended frontage. The pronominal form se retrancher is common in everyday and literary usage: a person or group withdraws to a secure position or isolates itself behind a defensive line.
A secondary sense, more common in political, administrative, or economic discourse, is to reduce, limit, or prune
Etymology and related forms: the verb derives from the root trancher (to cut) with the prefix re-
Usage notes: rétrancher tends to appear in formal or analytic registers, particularly in historical or political