(idiomatic) To overstep a boundary, rule, or limit; to go too far or do something unacceptable. / To finish a race. / To achieve completion of something. / To cross the equator, as a vessel at sea.

(UK, Australia, New Zealand, games) A two-player game played on a three-by-three grid, in which players take it in turns to place their respective symbol (either a nought or a cross) in a cell of the grid, the objective being to form a row, column or diagonal of three of one's own symbol.

hopefully

- used to express that one is expectant and hoping.

Fertilization by the union of gametes of different plants (sometimes of different species). / (by extension) The mutual exchange of ideas or concepts from different fields for mutual benefit.

Alternative spelling of cross-fertilization

A cross as a Christian symbol of the crucifixion of Christ

(idiomatic) To strike out; to cross out; to draw a line through. / (idiomatic, by extension) To finish; to regard something as complete.

(idiomatic, transitive) To strike out; to draw a line through.

(astronomy) A summer asterism of the northern sky, said to resemble a cross. It includes the stars Deneb and Albireo.