n.

1. 規章；規則，規定；條例[C]
   He was fined for breaking traffic regulations.

   他因違反交通規則而被罰款。

2. 管理；調整，調節；校準[U]
   the regulation of heat

   調節暖氣

a.

1. 標準的；正規的，正式的
   drive at a regulation speed

   按規定速度行駛

2. 普通的，一般的

n.

1. a rule or directive made and maintained by an authority.
   ▸ [as modifier] in accordance with regulations.
   ▸ [as modifier] informal of a familiar or predictable type.
2. the action or process of regulating or being regulated.