spindly (singular) Spindlies (plural) Share definition Flag Men between the ages of 30 and 38 who are extremely thin,and look like they are 17. Oh no, our blind dates are spindlies. spindly (singular) Spindlies (plural) by Carolyn Lehman June 27, 2005 0 0 Get merch Get the spindly (singular) Spindlies (plural) mug. Buy Now — $32.95 See more merch