n.
伦敦西区，西伦敦

[ noun ]
the part of west central London containing the main entertainment and shopping areas
<noun.location>

West \West\, a.
1. Lying toward the west; situated at the west, or in a
western direction from the point of observation or
reckoning; proceeding toward the west, or coming from the
west; as, a west course is one toward the west; an east
and west line; a west wind blows from the west.

This shall be your west border. --Num. xxxiv.
6.

2. (Eccl.) Designating, or situated in, that part of a church
which is opposite to, and farthest from, the east, or the
part containing the chancel and choir.
[Webster 1913 Suppl.]

{West end}, the fashionable part of London, commencing from
the east, at Charing Cross.