The Collaborative International Dictionary
Aftermost \Aft"er*most\, a. superl. [OE. eftemest, AS. [ae]ftemest, akin to Gothic aftumist and aftuma, the last, orig. a superlative of of, with the superlative endings -te, -me, -st.]
Hindmost; -- opposed to foremost.
(Naut.) Nearest the stern; most aft.
Wiktionary
a. (context nautical English) Nearest the stern of a vessel; hindmost.
WordNet
adj. located closest to the stern or tail
Usage examples of "aftermost".
As soon as they saw him looming in the dim glow of the hatchway the master and young Ricketts moved silently over to the larboard side, and Jack resumed his solitary pacing from the taffrail to the aftermost deadeye.
First space to hit was the aftermost engine room, the hatch all the way aft, port side.
There was no one in the gunroom at present apart from a seaman who was polishing the table and the foot of the mizenmast, which rose nobly through it half-way along, though Wilkins, whose watch had just been relieved, could be heard snoring in the aftermost larboard dog-hole.
The grapeshot, after smashing in the cabins, had swept forward to pepper the mizenmast and rip at the carriages of the aftermost guns.
On deck Captain Aubrey, eating a piece of cold or at least luke-warm pease pudding with one hand and holding on to the aftermost maintopgallant standing backstay with the other, did indeed urge his ship on with contractions of his belly-muscles and a continuous effort of his will.
In a moment the aftermost portion of the shaft alley was flooded, and water started entering the ship through her most vulnerable point.