chù​jiǎo

antenna

触角 (觸角) chù​jiǎo
antenna noun
sensory organs on the heads of insects and other arthropods

A snail retracts its tentacles as soon as it touches an obstacle.

feeler noun
figurative extension used to probe or exert influence in a new area

The multinational company is trying to extend its reach into emerging markets.

Frequency

Movie subtitles
1.40 per million appears in 1% of films
Written text
2.00 per million

Sources

Definitions
CC-CEDICT