See Also: concave(dictionary)
concave(dictionary)
Concave(medicine)
concave(2)(dictionary)
concave(1)(dictionary)
Concave(money)
Concave - Poker(gambling)
concave mirror(medicine)
concave lens(medicine)
Concave Card - Poker(gambling)

concave(2) (iou)



concave noun. M16.
[Old French from the adjective (see next: cf. Latin concava hollows), or ellipt. use of CONCAVE adjective.]
A hollow; a (cylindrical or spherical) cavity, the bore of a gun etc. M16-E19.
The concave inner surface of a vault, arch, hemisphere, etc.; freq. the vault of the sky, the vault of heaven. Chiefly poet. M16.
A concave lens, mirror, etc. E17.
A concave piece of a machine, as the part of a thresher in which the cylinder works etc. Chiefly US. L19.