The definition of a ladder is something made of two parallel side pieces with evenly spaced cross bars used for climbing, or a rising increase in levels.(noun)
See ladder in Webster's New World College Dictionary
Origin: ME < OE hlæder, akin to Ger leiter < IE base *lei-, to incline, lean
transitive verb, intransitive verb
See ladder in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old English hlǣder; see klei- in Indo-European roots.
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