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| | Encyclopedia: I beam |
 | | As a nautical term, beam was transferred from the main cross-timbers to the side of the ship; thus on the weather-beam means to windward, and a ship is said to be wide in the beam when she is wide horizontally. |
 | | In the last case, from meaning simply the cross-bar of the balance, beam has come to be used of the whole, as in the expression the kings beam, or common beam, which refers to the old English standard balance for wholesale goods, for several hundred years in the custody of the Grocers Company, London. |
 | | Baum, a tree, to which sense may be referred the use of beam as meaning the rood or crucifix, and the survival in. |
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