grummet | grommet, n.2
b. A ring of rope used as a substitute for a rowlock in a boat. (Also applied to an eyelet of metal serving the same purpose.)
c. A wad for keeping the shot steady in the bore when firing at a depression.
e. A washer used to insulate electric conductors passing through a hole in a conducting material.
grummet-iron n. a toggle-iron ( Cent. Dict.).
Draft additions 1993
Surg. A small plastic tube inserted into a hole made in the eardrum, to enable excess fluid to drain from the middle ear and for ventilation.
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