noun

• (botany) A cone-shaped fruiting body sensu stricto of gymnosperms and vascular plants other than angiosperms, bearing either seeds or spores, but sensu lato may refer to similarly structured catkins and cones in angiosperms; usage arbitrary according to preferences of various authorities.
• (botany) Sensu strictissimo a more-or-less cone-shaped fruiting body of any of various vascular Pteridophyta, such as horsetail, that bear spores;
• (botany) Sensu stricto according to source and context, a more-or-less cone-shaped fruiting body; a structure that might or might not be seen as an infructescence, usually woody, of either Pteridophyta or gymnosperms such as pines and cycads, that bear seeds — usage has varied arbitrarily among authors since the 19th century.
• (botany) Sensu lato according to source and context, A more-or-less cone-shaped fruiting body; a structure that might or might not be seen as an infructescence of either Pteridophyta, gymnosperms, or angiosperms; examples include the cones of Casuarina, or catkin-like strobili of Alnus
• (zoology) A strobila, a layered reproductive stage in jellyfish, in which the swimming medusa form is produced.