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aid ladder
aid lad·der
(
plural
aid lad·ders
)
noun
Definition:
series of climbing aids:
a series of climbing aids, usually metal bolts, fixed into cracks in a rock face one above the other to help climbers make their ascent
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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