joint

noun

A place or part at which two or more things are joined.

A way in which two or more things are joined.

A point of articulation between two or more bones, especially such a connection that allows motion.

A point in the exoskeleton of an invertebrate at which movable parts join, as along the leg of an arthropod.

An articulation on a fruit or stem, such as the node of a grass stem.