From The Collaborative International Dictionary of English v.0.48 [gcide]:
Aft \Aft\ ([.a]ft), adv. & a. [AS. [ae]ftan behind; orig.
superl. of of, off. See After.] (Naut.)
Near or towards the stern of a vessel; astern; abaft.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
aft
adv 1: at or near or toward the stern of a ship or tail of an
airplane; "stow the luggage aft"; "ships with square
sails sail fairly efficiently with the wind abaft"; "the
captain looked astern to see what the fuss was about"
[syn: aft, abaft, astern] [ant: fore, forward]
adj 1: (nautical, aeronautical) situated at or toward the stern
or tail [ant: {fore(a)}]