When you say “the expression ‘‒ ‒ ‒’ means to you a certain private experience” you are (indeed) supplementing this statement by imagining a red colour, or looking at a red object, or such like (which supply the ‘namely this’), but how do you make use || make use of the expression & the experience you thus connect with it? For how you say what we call the meaning of the word lies in the game we play with it.