steamtight

English

Etymology

From steam +‎ tight.

Adjective

steamtight (comparative more steamtight, superlative most steamtight)

  1. So tightly made that steam cannot enter or escape.
    • 1955 February, “The Why and the Wherefore: The Belpaire Firebox”, in Railway Magazine, page 146:
      To ensure that the stays are steamtight, a nut is then screwed tight up to copper washers inside and out.
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