(nautical) An order, on board ship, for all seamen of all watches to muster on deck immediately; normally shortened to "All hands" / (by extension) A call for everyone to participate in something.

(idiomatic) As good as claims or reputation would suggest.

(idiomatic, hyperbolic) Something very valuable or priceless.

(idiomatic) Such that the substance of the contest is complete, leaving only the cheering.

(idiomatic, informal, simile) Extremely; to a superlative degree; very much.

(US, idiomatic) Full of big talk but lacking action, power, or substance; pretentious.

(idiomatic) Despite seemingly insurmountable opposition or probability.

(idiomatic) To reserve nothing; to put forth all possible effort or resources.

(idiomatic) I don't understand any of it; it makes no sense.

(Christianity) An annual feast day celebrating the faithful departed on the second day of November, immediately following All Saints' Day. / (uncommon) Synonym of Tomb Sweeping Day, a Chinese holiday.