Definition of "Some" :
adjective: relatively many but unspecified in number
"They were here for some weeks."
adjective: relatively much but unspecified in amount or extent
"We talked for some time."
"That was some party."
adjective: (quantifier) used with either mass nouns or plural count nouns to indicate an unspecified number or quantity
"Have some milk."
adverb: (of quantities) imprecise but fairly close to correct
"Some forty people came."