A part of the wall that is made to remove (e.g., a Pesach kitchen).
The Halachas of מוקצה Muktzah. Differentiation and the Status of a Pen;
Introduction to the Melacha of Mechabeh (מכבה) (Extinguishing a Fire);
דבר דבר (Dabair Davar): Making Calculations—Understanding the Concept;