docking

1. (nautical) The securing of a vessel to the quayside with cables.

2. (astronautics) The process of connecting one spacecraft to another.

3. (sexuality, slang, vulgar) The male homosexual sex act involving two men co-joined by their penises, with overlapping foreskins.Examples: "From their discussions, the participants mentioned informational and stimulating variations. For touching, one could always use feather dusters, a massage, a tongue in the ear, spooning and sucking toes (known in New York City as "shrimping). There's also "docking" for foreskinned men who can creatively stroke appendages."slangvulgar

4. (molecular biology) A method which predicts the preferred orientation of one molecule to a second when bound to each other to form a stable complex.