cone vs tortoise shell

cone

noun
  • A shell of the genus Conus, having a conical form. 

  • A unit of volume, applied solely to marijuana and only while it is in a smokable state; roughly 1.5 cubic centimetres, depending on use. 

  • An object V together with an arrow going from V to each object of a diagram such that for any arrow A in the diagram, the pair of arrows from V which subtend A also commute with it. (Then V can be said to be the cone’s vertex and the diagram which the cone subtends can be said to be its base.) 

  • Any of the small cone-shaped structures in the retina. 

  • A cone-shaped flower head of various plants, such as banksias and proteas. 

  • Anything shaped like a cone. 

  • A passenger on a cruise ship (so-called by employees after traffic cones, from the need to navigate around them) 

  • An ice cream cone. 

  • A space formed by taking the direct product of a given space with a closed interval and identifying all of one end to a point. 

  • A surface of revolution formed by rotating a segment of a line around another line that intersects the first line. 

  • A solid of revolution formed by rotating a triangle around one of its altitudes. 

  • The fruit of a conifer. 

  • The process of smoking cannabis in a bong. 

  • A set of formal languages with certain desirable closure properties, in particular those of the regular languages, the context-free languages and the recursively enumerable languages. 

  • A traffic cone 

  • A cone-shaped cannabis joint. 

  • The bowl piece on a bong. 

verb
  • To fashion into the shape of a cone. 

  • To form a cone shape. 

  • To segregate or delineate an area using traffic cones. 

tortoise shell

noun
  • The shell of a tortoise, sometimes inaccurately the shell of a turtle, or that material. 

How often have the words cone and tortoise shell occurred in a corpus of books? (source: Google Ngram Viewer )