tickler coil tickler • tickler file · · · Info · Definitions · Characters · · tickler coil · · Text Common · · Latin · · Scripts 12 · · Length 3 · · Syllables Definitions · · · (noun) a small coil in series with the anode of a vacuum tube and coupled to the grid to provide feedback. Synonyms: tickler coil. · · Noun Definition 1 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 k latin small letter k U+006B l latin small letter l U+006C o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074