Meaning

noun a vine or climbing plant that readily grows up a support or over other plants

noun someone seeking social prominence by obsequious behavior

noun someone who ascends on foot

originFrom Middle English clymbere, clymber (“one who climbs, climber”), from climben (“to climb; to ascend, fly upward, rise; to slope upwards; to approach God in prayer; to advance; to overcome, triumph; to aspire; to be presumptuous”) + -er, -ere (suffix forming agent nouns). The English word is analysable as climb (verb) + -er (suffix forming agent nouns).

Etymology from Wiktionary, CC BY-SA 3.0