mid-15c., ramblen, "to wander, roam about in a leisurely manner," perhaps frequentative of romen "to walk, go" (see roam), perhaps via romblen (late 14c.) "to ramble." The vowel change is perhaps by influence of Middle Dutch rammelen, a derivative of rammen "copulate," "used of the night wanderings of the amorous cat" [Weekley], or the Middle English word might be from the Dutch one. Meaning "to talk or write incoherently" is from 1630s. Related: Rambled; rambling.
"a roving, an act of wandering for recreation or pleasure," especially a leisurely walk in varying directions, 1650s, from ramble (v.).