steamtight

adj

steamtight

adj

Etymology From steam + tight.

1

So tightly made that steam cannot enter or escape.

To ensure that the stays are steamtight, a nut is then screwed tight up to copper washers inside and out.1955 February, “The Why and the Wherefore: The Belpaire Firebox”, in Railway Magazine, page 146:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.