Chief; most important; principal.

主要的；最重要的。

The chief or greater part; the bulk; the gist.

主体；大部分；要点。

A large pipe or cable supplying a utility, as a water main.

输送公用事业的大型主管道或电缆，如给水干管。

The principal dish of a meal.

正餐中的主菜。

One’s primary character in a video game; by extension, primary account.

在电子游戏中主要使用的角色；亦指主账号。

The open ocean; the high seas.

公海；汪洋大海。

The mainland as opposed to islands.

大陆，相对于岛屿。

To play a particular character or class as one’s primary choice.

把某个角色或职业作为主要选择来玩。

Dialectal or archaic: very; greatly.

方言/古语：非常；很。