a need to urinate or defecate.
Need to urinate or defecate, as in He left to answer the call of nature. This euphemism may be dying out. [ Mid-1800s ]
a number, letter, symbol, or combination of these, indicating the specific location of a work in a library, especially the combination of the classification symbol and the designation for the author. Historical Examples Papers and Proceedings of the Thirty-fourth Annual Meeting of the American Library Association Held at Ottawa, Canada June 26-July 2, 1912 Various […]
see under above and beyond
a novel (1903) by Jack London.
call off the dogs