astern has definitions from the field of nautical
1
[ adverb ] (nautical) at or near or toward the stern of a ship or tail of an airplane

Synonyms

aft abaft

Examples

"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"

Related terms

fore

2
[ adverb ] stern foremost or backward

Examples

"the steamer went astern at half speed"

3
[ adverb ] (of a ship or an airplane) behind

Examples

"we dropped her astern on the end of a seven-inch manilla, and she laid comfortably on the ebb tide"

Related terms

ship airplane

*