Stuck on a problem? Get great tutoring at an affordable price with Chegg. Click here to join and get your 1st 30 minutes Free!


From Biology-Online Dictionary
Jump to: navigation, search


1. A hole; an aperture.

2. (Science: chemical) A short communication between adits in a mine. A long adit in a coalpit.

Origin: AS. Yrel a hole. 53. See Thirl, Thrill.

1. To cut through; to pierce.

2. (Science: chemical) To cut through, as a partition between one working and another.

See: thrill.