परवल या 'पटल' एक प्रकार की सब्ज़ी है। इसकी लता जमीन पर पसरती है। इसकी खेती असम, बंगाल, ओड़िशा, बिहार एवं उत्तर प्रदेश में की जाती है। परवल को हिंदी में 'परवल', तमिल में 'कोवक्काई', कन्नड़ में 'थोंड़े काई' और असमिया, संस्कृत, ओडिया और बंगाली में 'पोटोल' तथा भोजपुरी, उर्दू, और अवध भाषा में 'परोरा' के नाम से भी जाना जाता है।

Trichosanthes dioica Roxb., also known as pointed gourd, is a tropical perennial cucurbit plant with its origin in the Indian subcontinent. It is also known as parwal, palwal, potol, or parmalin in different parts of India and Bangladesh. The plant propagated vegetatively and grows with training on a support system as pencil-thick vines (creepers) with dark-green cordate (heart-shaped) simple leaves. It is a well-developed dioecious plants having distinct male and female flowers on staminate and pistillate plants, respectively. The fruits are green with white or no stripes' and have unpalatable seeds. Size can vary from small and round to thick and long — 2 to 6 inches. It thrives well under a hot to moderately warm and humid climate. The plant remains dormant during the winter season and prefers fertile, well-drained sandy loam soil due to its susceptibility to water-logging.