antenna

antenna
/ænˈtenə; æn`tɛnə/ n
1 (pl -nae / -ni:; -ni/) either of a pair of flexible sensitive organs on the heads of insects, crustaceans, etc; feeler 触角; 触须. =>illus at butterfly 见butterfly之插图.
2 (pl ~s) (US) = aerial1 （无线电或电视的）天线.

牛津英汉双解词典