simple -- (any herbaceous plant having medicinal properties)
simpleton, simple -- (a person lacking intelligence or common sense)
Overview of adj simple
The adj simple has 7 senses
simple -- (having few parts; not complex or complicated or involved; "a simple problem"; "simple mechanisms"; "a simple design"; "a simple substance")
elementary, simple, uncomplicated, unproblematic -- (easy and not involved or complicated; "an elementary problem in statistics"; "elementary, my dear Watson"; "a simple game"; "found an uncomplicated solution to the problem")
bare, mere, simple -- (apart from anything else; without additions or modifications; "only the bare facts"; "shocked by the mere idea"; "the simple passage of time was enough"; "the simple truth")
childlike, wide-eyed, round-eyed, dewy-eyed, simple -- (exhibiting childlike simplicity and credulity; "childlike trust"; "dewy-eyed innocence"; "listened in round-eyed wonder")