IPA: /ˈræmblər/
KK: /ˈræmblər/
A person who walks for pleasure, often in a leisurely or aimless way, or a type of climbing rose with many flowers.
On weekends, the rambler enjoys exploring the countryside trails.
Rambler → It is formed from "ramble" (from Middle English *ramblen*, meaning to wander about) and "-er" (meaning a person who). A rambler is a person who wanders about, often for pleasure or exploration.
Think of someone who enjoys 'wandering about' — that's what a rambler does, and the '-er' just means a person.