open-faced

US: /ˈoʊpənˈfeɪst/ ,(ō′pən fāst′)

WordReference Random House Learner's Dictionary of American English © 2026

o•pen-faced /ˈoʊpənˈfeɪst/   adj. 

1. having a face that seems innocent or truthful and not ready to deceive.
2. [before a noun] Also, ˈo•pen-ˌface. (of a sandwich) made with the filling lying on a single slice of bread.

WordReference Random House Unabridged Dictionary of American English © 2026

o•pen-faced  (ō′pən fāst′), adj. 

1. having a frank or ingenuous face.
2. Also, o′pen-face′. designating an open sandwich.
3. (of a watch) having the dial covered only by the crystal. Cf. hunting case. 

• 1600–10

Collins Concise English Dictionary © HarperCollins Publishers::

open-faced adjective

1. having an ingenuous expression
2. (of a watch) having no lid or cover other than the glass