[n] the act of joining things in such a way that motion is possible
[n] (anatomy) the point of connection between two bones or elements of a skeleton (especially if the articulation allows motion)
[n] the aspect of pronunciation that involves bringing articulatory organs together so as to shape the sounds of speech
[n] expressing in coherent verbal form; "the articulation of my feelings"; "I gave voice to my feelings"
[n] the shape or manner in which things come together and a connection is made