Meaning of IN in English
( prep. )
The specific signification of in is situation or place with respect to surrounding, environment, encompassment, etc. It is used with verbs signifying being, resting, or moving within limits, or within circumstances or conditions of any kind conceived of as limiting, confining, or investing, either wholly or in part. In its different applications, it approaches some of the meanings of, and sometimes is interchangeable with, within, into, on, at, of, and among.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012