What is the meaning of some?

adjective

• Quantifier; used with either mass nouns or plural count nouns to indicate an unspecified number or quantity.
  • usage: "have some milk"; "some roses were still blooming"; "having some friends over"; "some apples"; "some paper"
• Relatively much but unspecified in amount or extent.
  • usage: "we talked for some time"; "he was still some distance away"
• Relatively many but unspecified in number.
  • usage: "they were here for some weeks"; "we did not meet again for some years"
• Remarkable.
  • usage: "that was some party"; "she is some skier"

adverb

• Of quantities. ( imprecise but fairly close to correct)
  • usage: "lasted approximately an hour"; "in just about a minute"; "he's about 30 years old"; "I've had about all I can stand"; "we meet about once a month"; "some forty people came"; "weighs around a hundred pounds"; "roughly $3, 000"; "holds 3 gallons, more or less"; "20 or so people were at the party"
  • synonyms: approximately, about, close to, just about, roughly, more or less, around, or so