Wordo cauleMeaningthe stemPart of speechnounPronunciationCoursePortuguese (Portugal)LessonClarifying relative clauses (o qual, a qual)Usages of o cauleO botânico observa o caule da orquídea, a qual está a florescer.The botanist observes the stem of the orchid, which is blooming.Na botânica, nós estudamos os caules das plantas, os quais florescem na primavera.In botany, we study the stems of the plants, which bloom in spring.