2. [From Tangle] A knot of threads, or other thing, united confusedly, or so interwoven as not to be easily disengaged; a snarl; as, hair or yarn in tangles; a tangle of vines and briers. Used also figuratively.
3. An instrument consisting essentiallly of an iron bar to which are attached swabs, or bundles of frayed rope, or other similar substances, used to capture starfishes, sea urchins, and other similar creatures living at the bottom of the sea. Blue tangle.
(Science: botany) The turnstone.
Origin: Cf. Icel. Thongull. See Tang seaweed.