Home › Words › T › tillowtillowtillow · noun — branch; twig; shoot.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom Middle English *tilwe, *telwe, *telghe, from Old English telga, telge (“twig, branch, shoot”). More at tiller.nounBranch; twig; shoot.verbTo spread; branch out; send forth shoots.Definitions & examples from Wiktionary (CC BY-SA 3.0).