A cutting movement (Type of Gracing); NB: Pronunciation: Tàkhum.

According to instruction: “From c to low a, with a g gracenote, or a short c, followed by a d gracenote on a longer low a” (Note the unexplained discrepancy in pitch in the execution in the video [➺ below]: d², an f♯² gracenote, c♯², a d² gracenote, and a¹).
NB: Example(s) to be replaced with staff-notation.