They do define "large".
> We focus on large minimum wage increases (≥ $1 per hour), which are likely to be binding (Clemens and Strain, 2021, Fone et al., 2023).
> We focus on large minimum wage increases (≥ $1 per hour), which are likely to be binding (Clemens and Strain, 2021, Fone et al., 2023).