last post noun (military)

1. The second of two bugle-calls denoting the time for retiring for the night
2. The farewell bugle-call at military funerals

last rites plural noun

Religious rites performed for a person close to death

last straw noun

(ie the straw that breaks the camel's back) that small event or factor which, following a series of others, finally makes the situation intolerable or irreparable

last word noun

1. The final remark in an argument
2. The final decision
3. The most up-to-date of its kind (informal)

at last

In the end

at long last

After long delay

breathe one's last

To die

die in the last ditch

To fight to the bitter end

first and last

Altogether

last but not least

Finally but not less importantly

last thing

1. After doing everything else
2. Finally before going to bed at night

on one's last legs

On the verge of utter failure or exhaustion

put the last hand to

To finish, put the finishing touch to

see (or hear) the last of

To see (or hear) for the last time

the Last Day and the Last Judgment

The Day of Judgment

the Last Supper

The supper taken by Christ and his disciples on the eve of the crucifixion

the last trump

The trumpet that will sound at the Last Day (Bible, 1 Corinthians 15.52)

to the last

1. To the end
2. Until death