Ma'anar ƙamus na kalmar "gaɓar kwangila" wani tsari ne na jiki ko sashin jiki wanda ke da ikon yin kwangila ko gajarta, yawanci don mayar da martani ga abin motsa jiki kamar motsin jijiya, hormones, ko canje-canje a yanayin zafi ko matsa lamba. Misalai na gabobin da ke aiki sun haɗa da tsokoki, zuciya, da wasu nau'ikan gland. Ƙunƙarar waɗannan gabobin yana da mahimmanci ga ayyuka daban-daban na ilimin lissafi kamar motsi, zagayawa, da ɓoyewa.