Mess (m&ebreve_;s), n. Mass; church service. [Obs.] Chaucer.
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Mess (?), v. i. [imp. & p. p. Messed (?); p. pr. & vb. n. Messing.] To take meals with a mess; to belong to a mess; to eat (with others); as, I mess with the wardroom officers. Marryat.
[1913 Webster]