This is the 9252nd most frequent Catalan word.
grosses
"Grosses" in Catalan means "big" or "large" (plural form).
In this context, 'grosses' is an adjective describing the size of 'pomes' (apples), meaning 'large' or 'big'.
Les pomes més grosses estaven sobre la taula.
The largest apples were on the table.
Here, 'grosses' again functions as an adjective but pertains to the size of 'ulleres' (glasses), emphasizing their unusually large size.
Portava unes ulleres molt grosses que li tapaven mitja cara.
He was wearing very large glasses that covered half of his face.
In this usage, 'grosses' is metaphorical, describing 'qüestions' (issues) as being important or significant in scale.