The term ‘woodshedding ‘ refers to the instruction that is given to a witness in order to make him/her respond to one party’s favor. In woodshedding , the witness is advised about the method of responding to questions while giving testimony so that the testimony turns in the advising party’s favor. It is also known as horseshedding.
The following is an example of a case law defining the term:
The term "woodshedding" refers to impermissibly coaching a witness or unfairly prejudicing a witness during ex parte communications. [In re Yasmin & Yaz (Drospirenone) Mktg., Sales Practices and Products Liability Litig., 2011 U.S. Dist. LEXIS 21973 (D. Ill. 2011)].