UBS Dictionary of the Greek New Testament

Sense 1: quite near, nearby

Semantic entry: 83.27

Semantic domains: Spacial Positions

Subdomains: At, Beside, Near, Far

Definition: a position quite close to another position, with the possible implication of being contiguous

Sense 2: neighbor, brother

Semantic entry: 11.89

Semantic domains: Groups and Classes of Persons and Members of Such Groups and Classes

Subdomains: Socio-Political

Definition: a person who lives close beside others and who thus by implication is a part of a so-called in-group, that is, the group with which an individual identifies both ethnically and culturally

Notes: It may be that of the three terms γείτων, περίοικος, and πλησίον[b], the last is somewhat broader in meaning. At least πλησίον is used in OET LUK 10:27 in a somewhat extended sense of ‘fellow man,’ while ἀδελφός[e] probably suggests a more intimate or close relationship.|The translation of πλησίον[b] as a singular in OET LUK 10:27 may pose a problem in understanding, since the singular may be understood in a specific rather than in a generic sense, that is to say, ‘love your neighbor as yourself’ might immediately give rise to the question ‘which neighbor?’ Therefore, one must often translate OET LUK 10:27 as ‘you must love your neighbors as you love yourselves’ or ‘you must love other people as you love yourselves.’