Carouse \Ca*rouse"\, v. i. [imp. & p. p. Caroused; p. pr. & vb. n. Carousing.]

To drink deeply or freely in compliment; to take part in a carousal; to engage in drunken revels.

He had been aboard, carousing to his mates. --Shak.

Source: Webster's Revised Unabridged Dictionary (1913)