(idiomatic, often humorous) Used (sometimes sarcastically) to indicate that a past event being mentioned is particularly important: a long time ago; many years ago.

(snooker) The corner pocket on a snooker table that is nearest the yellow spot.

(idiomatic) During every year; always.

(idiomatic, often humorous) A proverbial path to a Promised Land of one's hopes and dreams.

Alternative form of yellow brick road

Any of a species of small penguin, Megadyptes antipodes, with a distinctive yellow band around its eyes, native to New Zealand.

(sports) To show someone a yellow card

(idiomatic, soccer) To receive a yellow card.

(historical) A year in the old Julian calendar that has either 365 or 366 days. / (astronomy) A unit of measurement of time defined as exactly 365.25 days of 86400 SI seconds each.

The amount of time between the beginning of the first day of January and the end of the last day of December in the Gregorian calendar. (365 days, or 366 in a leap year)