(espionage) Of a spy: to return home after having gone undercover in enemy territory. / (by extension) To gain widespread acceptance in a group or society, especially where there was not any before.

(idiomatic) In present practice rather than in theory; with the priority of palpably and actually existing.

Taking as much time as one requires; when one is ready.

plural of co-grandfather-in-law

(idiomatic, colloquial) Used to express the speaker's skepticism about another's preceding statement about a desired or assumed state of affairs.

Misspelling of in memoriam.

Mutually synchronized

(US, chiefly in the negative) To have a personal stake in the issue.

Of a system or service, accepting incoming connections over a telephone line. / (networking) Of a computer, set up to accept incoming modem calls. / (networking, proscribed) Dial-up.

The act of connecting to a system or service by means of a telecommunication network.