Mortar bed

(Mil.)	a framework of wood and iron, suitably hollowed out to receive the breech and trunnions of a mortar.
	a shallow box or receptacle in which mortar is mixed.

mortar bed

1. A mortar box. 2. A thick layer of mortar used to seat a structural member.

A shallow, trough-like box in which mortar or plaster is mixed.

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