fourth

The ordinal form of the number four.not-comparable

• Finnley is the fourth daughter of Jason and Kylie Kelce, having already welcomed Wyatt, Elliotte and Bennett to the family.

The person or thing in the fourth position.singular

• We are one F and two M's seeking the company of a fourth (M or F) for our spacious and friendly Somerville apt.

A quarter, one of four equal parts of a whole.US

The fourth gear of an engine.singular

A musical interval which spans four degrees of the diatonic scale, for example C to F (C D E F).

• Now I've heard there was a secret chord / That David played, and it pleased the Lord / But you don't really care for music, do ya? / It goes like this, the fourth, the fifth

One sixtieth of a third or tierce.rare

• […] thirds (sixtieths of seconds), fourths (sixtieths of thirds) and so on, but then it becomes very cumbersome.

To agree with a proposition or statement after it has already been thirded.informal

• It was then moved, seconded, thirded, fourthed, and fifthed, “that Jarman be, and is hereby hung, and ought to be kicked.”