The nominal height of the surface of the oceans above which heights of geographical features and aircraft flight levels are measured.

A sea in British Isles, Europe, in the Atlantic. A sea between the islands of Great Britain and Ireland; bordered to the north by the North Channel and to the south by St George's Channel and the Celtic Sea.

Suffering from sickness, nausea or dizziness due to the motion of a ship at sea.

Marine blue-green algae (cyanobacteria, actually brown coloured) of the genus Trichodesmium.

Any sessile tunicate, of the class Ascidiacea, which squirts water from two openings when touched; they are filter feeders

Alternative spelling of séance

Alternative spelling of séance

Wax formerly melted onto a letter to seal it; the picture of the sender's seal was often pressed into the wax as evidence that the letter had not been opened.

very hot; blistering or boiling / (of a pain) having a sensation of intense sudden heat / damning; critical; scathing

action of the verb to sear / cooking food quickly at high temperature