Term: hairline: a very thin line
Broader: line: a mark that is long relative to its width | Unrelated: masthead: the title of a newspaper or magazine; usually printed on the front page and on the editorial page
Broader: line: a mark that is long relative to its width | Unrelated: coalfield: a region where there is coal underground
Broader: line: a mark that is long relative to its width | Unrelated: kibibit: a unit of information equal to 1024 bits
Broader: line: a mark that is long relative to its width | Unrelated: trust: the trait of believing in the honesty and reliability of others
Broader: line: a mark that is long relative to its width | Unrelated: diaphragm: electro-acoustic transducer that vibrates to receive or produce sound waves
Broader: line: a mark that is long relative to its width | Unrelated: spall: a fragment broken off from the edge or face of stone or ore and having at least one thin edge
Broader: line: a mark that is long relative to its width | Unrelated: throne: the chair of state for a monarch, bishop, etc.
Broader: line: a mark that is long relative to its width | Unrelated: nitrite bacterium: any of the nitrobacteria that oxidize ammonia into nitrites
Broader: line: a mark that is long relative to its width | Unrelated: air cushion: the trapped air that supports a hovercraft a short distance above the water or ground
Broader: line: a mark that is long relative to its width | Unrelated: scour: a place that is scoured (especially by running water)