(View exact match)foldingCATEGORY: ceramics
DEFINITION: A type of shaping in which the potter flares a rim outward or bends it inward and then rolls it down to double the rim's thickness or create a complicated profile.
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DEFINITION: An ancient military engine used for smashing in doors and battering down walls. It consisted of a beam of wood with a head of iron - originally a ram's head but later in the form of a ram's head - and swung by chains from an overhead scaffolding. It had a roof to protect those working it from the missiles of the garrison.laminatingCATEGORY: artifact
DEFINITION: The production of a high-quality metal tool or weapon by repeatedly forging out a blank form, folding the metal over and forging it again so that qualities of malleability and hardness can be combined.law of superpositionCATEGORY: term
DEFINITION: The principle that states that in any pile of sedimentary rocks that have not been disturbed by folding or overturning, the strata on the bottom will have been deposited first. This is the principle that the sequence of observable strata, from bottom to top, reflects the order of deposition, from earliest to latest. Older beds or strata are overlain and buried by progressively younger beds or strata.umbrellaCATEGORY: artifact
DEFINITION: A folding circular cover on a stick held in the hand for protection against rain.