Term: safety valve: a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: ardea: type genus of the Ardeidae: large New and Old World herons
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: dialect geography: the study of the geographical distribution of linguistic features
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: torpedo-boat destroyer: small destroyer that was the forerunner of modern destroyers; designed to destroy torpedo boats
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: quantum theory: (physics) a physical theory that certain properties occur only in discrete amounts (quanta)
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: finback: large flat-headed whalebone whale having deep furrows along the throat; of Atlantic and Pacific
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: eagle ray: powerful free-swimming tropical ray noted for `soaring' by flapping winglike fins; usually harmless but has venomous tissue near base of the tail as in stingrays
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: launching pad: a platform from which rockets or space craft are launched
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: shin bet: the Israeli domestic counterintelligence and internal security agency
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: radio receiver: an electronic receiver that detects and demodulates and amplifies transmitted signals
Broader: valve: control consisting of a mechanical device for controlling the flow of a fluid | Unrelated: smithereens: a collection of small fragments considered as a whole