coak

/kohk/US // koʊk //

煤球,煤炉,煤油灯,煤烟

Definitions

n.名词 noun

1
Carpentry.
- : a tenon in one member fitting into a corresponding recess of the other.
- : a dowel through overlapping timbers to prevent one from sliding across the other.

If we estimate the coak by its comparative heating power, it represents 65 per cent.
The coak which remains in the retorts constitutes about 60 per cent.
When the coak is used for heating the retorts, about one half of the whole is required.
By the seventh operation, the central hole in the coak for the pin, on which the sheave turns, is drilled out.
So truly are those grooves formed, that the slight tap of a hammer is sufficient to fix the coak in its place.