Chuck 1 . ( Of the ingl. )( mandrill ). 1. m. Cuadrumano of around eight decimetres from the top of the head to the start of the tail, and four in height when it walks on all fours; small head, long snout, thick, Brown fur on the top and blue party in the lower red, flat nose, with wings long, wrinkled, erection and dark blue, and raised and short tail. He lives near the western coast of Africa. Chuck 2 . ( Del fr. ma (ndrin). 1. m. Mec. Piece of wood or metal, cylindrical in shape, which ensures that is turning. 2. m. Mec. reamer bit.