(archaic) The lamprey.

The northern butcher bird.

plural of nine-killer

(In both the 12-hour clock and the 24-hour clock) The start of the tenth hour of the day; 9:00 a.m. (09:00).

The cardinal number immediately following forty-eight and preceding fifty.

The cardinal number immediately following seventy-eight and preceding eighty.

The cardinal number immediately following thirty-eight and preceding forty.

The cardinal number immediately following fifty-eight and preceding sixty.

(slang) To have sex in the sixty-nine position: to engage in mutual oral sex.

(sexuality) A sex position where two people give each other oral sex at the same time.