The word squeeze is used alot in the fitness world: What exactly does the word mean to you as a professional?
In my many years in the fitness industry I’ve wondered the same thing! But then I’ve heard lots of things using terms and descriptions that clearly are based on academic correctness.
I think it just means to contract the target muscle with maximal of near-maximal effort. I also think that if it gets your client or your students to contract or engage the target muscle with signficant effort the word description of what they’re doing isn’t all that important!
Take care.