Directory on Popular Piety and the Liturgy (DPPL). What about the term “devotions?”
8. In the present context, this term is used to describe various external practices (e.g. prayers, hymns, observances attached to particular times or places, insignia, medals, habits or customs). Animated by an attitude of faith, such external practices manifest the particular relationship of the faithful with the Divine Persons, or the Blessed Virgin Mary in her privileges of grace and those of her titles which express them, or with the Saints in their configuration with Christ or in their role in the Church’s life(Cf. Council of Trent, Decretum de invocatione, veneratione, et reliquiis Sanctorum, et sacris imaginibus (3. 12. 1563), in DS 1821-1825; Mediator Dei 581-582; SC 104; LG 50.).
When we speak of devotions, then, we are talking about external practices. The pedigree of this brief section is supported by Trent and Vatican II.