porthole• Before going ashore, securehatches and lock all portholes and doors.• This will change the voltage at any porthole whose current line is affected, and the appropriatevoltmeter will register the fact.• He looked out his porthole, a diamond-shaped window in the door.• Rostov peered past the screen at the porthole, but he could see nothing of the surface of the planet.• The Doctor found the porthole to the otherworld almost instinctively.• She knelt up and peered through the tinyporthole.• Basler have chosen to alter the cabinglazing to portholestyle.• All cabins are outside, with porthole, have privatefacilities and air-conditioning.