Definition of roof bolt in English:

roof bolt

Line breaks: roof bolt

noun

Mining
A tensioned rod anchoring the roof of a working to the strata above.
More example sentences
  • The protracted closure of the main pool for three months after the failure of a couple of roof bolts, and the lack of publicity for the training pool's availability, meant many customers simply ‘lost the habit’ of visiting their local pool.
  • She stated in her letter that the pool was closed for repair work for three months due to a couple of roof bolts.

Derivatives

roof-bolting

noun

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day retroflex
Pronunciation: ˈretrəˌfleks
adjective
turned backward