(sequence, idiomatic) Firstly; before anything else.

colostrum; beestings

(geology, volcanology) An area of frequent earthquakes and volcanic activity, around the Pacific Ocean.

(card games) A drinking game in which each card of a pack of playing cards, picked at random from a deck sprawled out in a circle, has a certain consequence (involving drinking, or playing a particular drinking game).

(rugby) The first player to receive the ball, from a scrum-half (or acting scrum-half). This is often the fly-half, but may be a different player if the fly-half is unavailable, or a forward who will drive.

(video games) A button on a joystick or joypad that corresponds to the action of firing a weapon, but often represents other in-game actions.

The ordinal form of the number thirty-one, describing a person or thing in position number 31 of a sequence.

One of thirty-one equal parts of a whole.

The ordinal form of the number forty-one, describing a person or thing in position number 41 of a sequence.

One of forty-one equal parts of a whole.