conduct an inquiry or investigation of; "The district attorney's office investigated reports of possible irregularities"; "inquire into the disappearance of the rich old lady"
investigate scientifically; "Let's investigate the syntax of Chinese"
line thrown from a vessel that people can cling to in order to save themselves from drowning
line that raises or lowers a deep-sea diver
support that enables people to survive or to continue doing something (often by providing an essential connection); "the airlift provided a lifeline for Berlin"; "she offered me a lifeline in my time of grief"
the act of upsetting something; "he was badly bruised by the upset of his sled at a high speed"
the act of disturbing the mind or body; "his carelessness could have caused an ecological upset"; "she was unprepared for this sudden overthrow of their normal way of living"
a tool used to thicken or spread metal (the end of a bar or a rivet etc.) by forging or hammering or swaging
mildly physically distressed; "an upset stomach"
disturb the balance or stability of; "The hostile talks upset the peaceful relations between the two countries"
defeat suddenly and unexpectedly; "The foreign team upset the local team"
domesticated bovine animals as a group regardless of sex or age; "so many head of cattle"; "wait till the cows come home"; "seven thin and ill-favored kine"- Bible; "a team of oxen"