Definition of "trunnions" [trunnions]

• Plural form of trunnion. (noun)

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• "That we may be understood, we will add that the trunnions are the short round pieces of iron, or brass, projecting from the sides of the cannon, and their relative position can be easily ascertained by a glance at the gun occupying the foreground of the"
• "These projecting shanks served as "trunnions" (that is, pivots) for the mirror to turn on when it was mounted in place."
• "The point loads of trunnions result in a major increase in structural loads on the payload to spread those into a shell structure."