What does “to the left” mean?
Yes, "to the left" refers to the left side of an equilibrium expression.

Traditionally, the autoionization of water is written as

$$\ce{2H2O &lt;=&gt; H3O+ + OH-}$$

When we talk about equilibrium lying "to the left", it means that the educt/reactant is favored, i.e. more $\ce{H2O}$ than $\ce{H3O+}$ or $\ce{OH-}$.

Conversely, an equilibrium that lies "to the right" is one that favors products. In this case, it would favor the production of $\ce{H3O+}$ and $\ce{OH-}$ over $\ce{H2O}$,