in the sense of "die", maybe we could also consider a few others ;-) such as:
kick the bucket, go for a burton, buy the farm, buy the ranch, buy it, drop the cue, go for one's tea, go to the races, eat it, have it, hop the twig, come to a sticky end, turn one's face to the wall, go down the tube, slip/cut one's cable, snuff it, breathe one's last, go to Davy Jones's locker ( = drown)
call it a day, call it quits, quit the scene, quit it, give up the ship, pass in one's checks, put one's checks in the rack, hang up one's hat, hang up one's harness, lay down one's knife and fork, hand in one's dinner-pail, throw in the sponge
kick off, cool off, kiss off, pop off, slam off, drop off, pipe off, shove off, step off, conk off
check out, peg out, pass out, strike out, chalk out, flake out, flack out, conk out, bow out, weigh out
pop one's clogs, drop off the twig, step off the deep end, snuff out like a candle.
throwing in one's cards, or throwing in one's hand.
cash in, cash in / pass in / hand in one's chips, call off all bets.
turn up one's toes, curl up one's toes and die, up and die, go belly up
push up daisies, be grounded for good, strike bedrock, deep six, feed the worms, take a dirt nap.
collection found at: http://www.uta.fi/FAST/US1/P1/dying.html