IshIsa 44:26 :ܫܪܓܐ ܕܡܛܦܛܦ ܩ݁ܪܐ܃ ܠܗ݀ܘ ܕܓܡܪ ܡܫܚܗ ܘܠܐ ܦܝܫܐ ܒܗ‏ : he calls a flickering lamp the one whose oil has run out and does not remain in it
See the entire entry for ṭpṭp vb. to flicker out