1.
fastened together
a picnic table with attached benches
2.
being joined in close association
all art schools whether independent or attached to universities
3.
used of buildings joined by common sidewalls
a block of attached houses
4.
permanently attached to a substrate; not free to move about
an attached oyster
5.
associated in an exclusive sexual relationship
On April 4, 1974, John Massis of Belgium pulled two New York Long Island railroad passenger cars totaling 80 tons with a thick rope, with a small bit attached, using only his teeth.