Englishfor English speakers
expansion
Noun
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The act or process of expanding.
The expansion of metals and plastics in response to heat is well understood.
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A new addition.
My new office is in the expansion behind the main building.
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A product to be used with a previous product.
This expansion requires the original game-board.
arbor
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noun
(= arbour)
a framework that supports climbing plants
the arbor provided a shady resting place in the park
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noun
tree (as opposed to shrub)
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noun
(= spindle)
any of various rotating shafts that serve as axes for larger rotating parts