Tren″tal (?), n. [LL. trentale, fr. L. triginta thirty; akin to tres three: cf. OF. trentel. See Three, and cf. Trigintal.] 1. (R. C. Ch.) An office and mass for the dead on the thirtieth day after death or burial. “Their trentals and their shrifts.” Spenser.
2. Hence, a dirge; an elegy.