D defs.my
Entry 1 sense Webster, 1913

Tenebrae

· Ten·e·brae · IPA /ˈtɛnəˌbɹeɪ/
01 n. The matins and lauds for the last three days of Holy Week, commemorating the sufferings and death of Christ, -- usually sung on the afterno…
  1. 1.
    The matins and lauds for the last three days of Holy Week, commemorating the sufferings and death of Christ, -- usually sung on the afternoon or evening of Wednesday, Thursday, and Friday, instead of on the following days.(R. C. Ch.)