Cloak (klōk; 110), n. [Of. cloque cloak (from the bell-like shape), bell, F. cloche bell; perh. of Celtic origin and the same word as E. clock. See 1st Clock.] 1. A loose outer garment, extending from the neck downwards, and commonly without sleeves. It is longer than a cape, and is worn both by men and by women.
[1913 Webster]

2. That which conceals; a disguise or pretext; an excuse; a fair pretense; a mask; a cover.
[1913 Webster]

No man is esteemed any ways considerable for policy who wears religion otherwise than as a cloak. South.
[1913 Webster]

Cloak bag, a bag in which a cloak or other clothes are carried; a portmanteau. Shak.
[1913 Webster]