Editing Crotch (section)

== Scope ==
The semantic field of the term ''crotch'' is sometimes expanded to include objects which have shapes similar to that of the anatomical human crotch.<ref>Widdowson, Henry G. "Aspects of the relationship between culture and language." Communication interculturelle et apprentissage des langues. Triangle 7 (1988).</ref> This may include botanical structures such as the area where tree branches are joined together<ref>Shigo, Alex L. "How tree branches are attached to trunks." Canadian Journal of Botany 63.8 (1985): 1391–1401.</ref> or mechanical structures which fork or branch or where ramification takes place.<ref>Zhang, L. "Thermal Deformation Modelling Attempt Of A Storage Ring Vacuum Vessel." Proceedings of EPAC, Vienna, Austria (2000): 2486–2488.</ref> The term had also been expanded to include the joining together of asymmetrical surfaces in cue sports equipment or the corners of  flat surfaces usually made of quarried slate.<ref>Byrne, Robert. Byrne's new standard book of pool and billiards. Houghton Mifflin Harcourt, 1998.</ref>