Mainshaft

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    the principal shaft of a motor
  2. 2
    The primary shaft of an arrow into which the foreshaft containing the arrowhead is inserted.

Etymology

From main + shaft.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.