(biology) The characteristic of an organism that enables it to survive and reproduce better than other organisms in a population in a given environment; the basis for evolution by natural selection.

(economics) The capability to produce more of a given product using the same quantity or less of a given resource than a competing entity.

(sports) To allow play to continue, that the referee doesn't whistle for a foul, despite the attacking team being fouled, because they are in an advantageous position.

(economics) The ability to produce a particular good at a lower relative opportunity cost than another producer.

(transitive) To avail oneself of an (often unfair) opportunity against.

(sports) The advantage a sports team has from using their usual sports field

plural of rest of advantage

(historical) Synonym of lance rest

In a way that is favorable to one.

(US, sports) The advantage a team enjoys from being on its usual playing field. / (by extension) The advantage anyone enjoys from familiar surroundings or circumstances.