A pen name or pseudonym.

A final blow or shot given to kill a wounded person or animal. / (by extension) A remarkable finishing action.

A pale bluish-gray colour.

Of a pale bluish-gray colour.

A pale bluish green colour.

Of a pale bluish green colour.

(heraldry) A design representing a flower whose three petals are joined together at the bottom, often used in heraldry, where it is particularly associated with the French monarchy.

Alternative form of bêche-de-mer

plural of De Morgan's law

(physics) the wavelength, λ=h/p, associated with a beam of particles of momentum p. (h being Planck's constant.) The same formula gives the momentum of a photon or wavelength λ.