Definitions for 挒 and 掤
挒 is defined in Grand Ricci as:


  liè
  3 (Arts mart.) Se fendre; utiliser les deux forces opposées pour bloquer ou déséquilibrer l’adversaire.


Which Google translates as:


  3 (Arts mart.) Split; use the two opposing forces to block or unbalance the opponent.


Arts mart. should probably just be switched to martial arts.



掤 is defined in Grand Ricci as:


  bīng
  2 (Arts mart.) Mouvement des bras pr repousser l’adversaire ds la direction d’où il vient.


Which Google translates as:


  2 (Arts mart.) Movement of the arms to repel the opponent in the direction from which he has come.