double entendre

kaksimielisyys, kaksiselitteisyys puhekieltä A phrase that has two meanings, especially where one is innocent and literal, the other risqué, bawdy, or ironic; an innuendo.
1812, A treatise on politeness, tr. from the French by a lady, page 172

Avoid all equivocal expressions, usually denominated double entendre; they are certain proofs of a mean and indelicate mind.

It is a momentous crusade without the cross; and an insidious one, for the calumnies and double entendre against the church are well wrapped up and keenly distributed.

It is not only the teacher's play with single words, phrases, and double entendre that are common in my classroom data.