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rapid transit
rapier
rapine
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rapist
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Rappahannock
rappel
rappel bolting
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rapper
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raphide

ra·phide [ ráy fd ] or ra·phis [ ráyfiss ] (plural raph·i·des [ ráffi dz ])


noun 
Definition:
 
needle-shaped crystal in plant cells: a crystal of calcium oxalate found in some plant cells as a byproduct of their metabolism

[Mid-19th century. Via French< Greek rhaphid- "needle" < rhaptein "sew"]
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