Peg-and-socket joint

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peg-and-socket joint --> gomphosis

(Science: anatomy) A form of union or immovable articulation where a hard part is received into the cavity of a bone, as the teeth into the jaws.

Origin: NL, fr. Gr, prop, a bolting together, fr. To fasten with bolts or nails, bolt, nail: cf. F. Gomphose.