Definition of petcock in English:

petcock

Syllabification: pet·cock
Pronunciation: /ˈpetˌkäk
 
/

noun

A small valve, especially in the pipe of a steam boiler or cylinder of a steam engine for drainage or testing.
More example sentences
  • They were fitted with a dial gauge, a vent port in the form of a petcock or counterweight, and a safety fuse.
  • This time I put a piece of tape over the petcock opening instead of using the screw on block off plate I had made to use on the first steps.
  • Steam for ten minutes, then shut off the steam by either closing the petcock or dropping the weight gauge into place.

Definition of petcock in:

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Word of the day apposite
Pronunciation: ˈapəzit
adjective
apt in the circumstances or relation to something