Here you will find one or more explanations in English for the word Trundlehead.
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Trundlehead
Trundlehead Trun"dle*head`, n.
1. (Gearing) One of the disks forming the ends of a lantern
wheel or pinion.
2. The drumhead of a capstan; especially, the drumhead of the
lower of two capstans on the sane axis.
Meaning of Trundlehead from wikipedia