Wiktionary
cap'n
n. (context informal English) Contraction of (term: captain) used as a title.
Usage examples of "cap'n".
Here you, Carrie—light up the dish light— T'ain't much, Cap'n, but it's better than a lantern.
So Cap'n Aki says, we're goin' out to new frontiers, out here in Kanddoyd territory, where they are friendly with humans, and might think our stuff worth something.
But before we could do anything, Cap'n yelled at our navigator to take evasive action, and for crew to stand by in the life pods.