Definition of click back
The expression click back is used for the poker in line only. The fact of click back is the fact of making the smallest possible raise without touching the bet cursor. As is the case in many poker-only games, click back is used for several reasons. You also have to interpret click back in different ways, depending on the player you are playing against.
The symbolism of the click back
Usually the click back will be a sign of strength. One might even add that a click back often means that the player is very strong. A player bets, you make a check raise by raising three times his bet and your opponent over-raises you, but this time he click back. As we said before, this is often a sign of strength. A small raise so that we have no choice but to call and continue in the hand. A way for him to tell us "I have a very strong hand, I have no choice but to raise to maximize my winnings, but I don't want you to fold, so I'll give you a friend price". A player can also use click back to intimidate another player. A click back on the flop can discourage a player from making an aggressive move on the turn which will result in a cheap river.