1) Computer storage company 2) Teiid 3) Teiid lizard 4) Whiptail lizard 1) Racerunner 
Whiptail can refer to the following: ...[company] Whiptail (styled as WHIPTAIL) was previously a privately held company that builds data storage systems out of solid-state drive components. Whiptail designed and commercialized the use of NAND flash memory as a replacement for hard disk drives in large-scale storage systems. The company is named after the whiptail racerunner, a fa...
(from the article `wallaby`) ...wallaby (M. rufogriseus), with reddish nape and shoulders, which inhabits brushlands of southeastern Australia and Tasmania; this species is often ...
[n] - any of numerous very agile and alert New World lizards
whiptail lizard noun any of numerous very agile and alert New World lizards