Found 2 items, similar to spirograph.
English → English (WordNet) Definition: spirograph spirograph n : a measuring instrument for recording the depth and rapidity of breathing movements
English → English (gcide) Definition: Spirograph Spirograph \Spi"ro*graph\, n. [L. spirare to breathe + -graph.] (Physiol.) An instrument for recording the respiratory movements, as the sphygmograph does those of the pulse. [1913 Webster]