Captain — Defs

01 n. A head, or chief officer

1.
A head, or chief officer
“A trainband captain eke was he.” — Cowper.

“The Rhodian captain, relying on . . . the lightness of his vessel, passed, in open day, through all the guards.” — Arbuthnot.
2.
A military leader; a warrior.
“Foremost captain of his time.” — Tennyson.

Phrases & compounds

Captain general — The commander in chief of an army or armies, or of the militia.

Captain lieutenant — a lieutenant with the rank and duties of captain but with a lieutenant's pay, -- as in the first company of an English regiment.

02 v. t. To act as captain of; to lead.

1.
To act as captain of; to lead.[R.]
“Men who captained or accompanied the exodus from existing forms.” — Lowell.

03 a. Chief; superior.