鋼圈

wheel rim / underwire (in a bra)

steel

to confine / to lock up / to pen in

pen (pig) / a fold

circle / ring / loop / classifier for loops, orbits, laps of race etc / CL:個|个[ge4] / to surround / to circle

circle; ring; loop (CL:個|个[ge4]) / classifier for loops, orbits, laps of race etc / to surround; to circle

wireless (bra)