rub

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rub

1. Bowls an uneven patch in the green
2. 
a. Golf an incident of accidental interference with the ball
b. Informal a piece of good or bad luck
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Pericarditis is typically identified by recurrences of chest pain and/or pericardial rub and is monitored by ECG or pericardial inflammation shown by echocardiography [12].
If a doctor listens to the heart it's possible to hear the two membranes rubbing together and this is called a pericardial rub.
It is characterised by typical chest pain, pericardial rub, widespread saddle shaped or concave shaped upward ST elevation on electrographic pericardial effusion, fever, high erythrocyte sedimentation rate and high C-reactive protein.