Definitions from Wiktionary ( )

▸ noun:  (automotive, aviation, organic chemistry) tetraethyllead (or tetraethyl lead, tetra-ethyl lead); a gasoline additive to boost octane rating
▸ noun:  A label for telephone number.
▸ noun:  Abbreviation of telephone number. [The sequence of digits used to identify a particular destination telephone in a network.]
▸ noun:  Abbreviation of telegraph. [(uncommon) Synonym of telegraphy, any process for transmitting arbitrarily long messages over a long distance using a symbolic code.]
▸ noun:  Abbreviation of telegram. [A message transmitted by telegraph.]
▸ noun:  Alternative form of tell (“hill or mound”) [A reflexive, often habitual behavior, especially one occurring in a context that often features attempts at deception by persons under psychological stress (such as a poker game or police interrogation), that reveals information that the person exhibiting the behavior is attempting to withhold.]
▸ noun:  (astronautics, military) Initialism of transporter erector launcher.

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