Real Dictionary

ramble
countable noun: A ramble is a long walk in the countryside.
verb: If you ramble, you go on a long walk in the countryside.
verb: If you say that a person rambles in their speech or writing, you mean they do not make much sense because they keep going off the subject in a confused way.

ramble in American English
a rambling; esp., an aimless stroll
to roam about; esp., to walk or stroll about idly, without any special goal
to roam through
intransitive verb: to wander around in a leisurely, aimless manner
noun: a walk without a definite route, taken merely for pleasure
transitive verb: to walk aimlessly or idly over or through

ramble in British English
to stroll about freely, as for relaxation, with no particular direction
noun: a leisurely stroll, esp in the countryside