rare. [f. as prec.: see -ULE.] One of the minute tubules forming the spinneret of a spider.
1830. Insect Archit. (L.E.K.), 337. These are minute tubes which we may appropriately term spinnerules, as each … emits a thread of inconceivable fineness. Ibid. Spinnerets of a Spider magnified to show the Spinnerules.
