IshGen 24:24 :ܘܒܪܦܦ ܥܝܢܐ ܐܬܩܫܝ ܘܐܬܡܬܚ‏ : (the firmament) congealed and spread out in an eye-blink
See the entire entry for rp̄āp̄ā, rp̄āp̄ā v.n. movement; twitch