Term: crank letter: a hostile (usually anonymous) letter
Broader: letter: a written message addressed to a person or organization | Unrelated: cactus wren: large harsh-voiced American wren of arid regions of the United States southwest and Mexico
Broader: letter: a written message addressed to a person or organization | Unrelated: viviparous eelpout: an eelpout of northern Europe that is viviparous
Broader: letter: a written message addressed to a person or organization | Unrelated: paddy: (ethnic slur) offensive term for a person of Irish descent
Broader: letter: a written message addressed to a person or organization | Unrelated: ill nature: a disagreeable, irritable, or malevolent disposition
Broader: letter: a written message addressed to a person or organization | Unrelated: exporting: the commercial activity of selling and shipping goods to a foreign country
Broader: letter: a written message addressed to a person or organization | Unrelated: fang: canine tooth of a carnivorous animal; used to seize and tear its prey
Broader: letter: a written message addressed to a person or organization | Unrelated: disorder: a disturbance of the peace or of public order
Broader: letter: a written message addressed to a person or organization | Unrelated: input signal: signal going into an electronic system
Broader: letter: a written message addressed to a person or organization | Unrelated: astronomy satellite: a satellite equipped with a telescope to observe infrared radiation
Broader: letter: a written message addressed to a person or organization | Unrelated: linguistics: the humanistic study of language and literature