探

probing; sounding

inquisitive questioning

strict search; sharp lookout

searchlight

feel one's way (with one's feet)

private inquiry; private enquiry; secret investigation

searching for gold

using one's chopsticks to find a food one likes by rummaging in one's dish, pot, etc. (a breach of etiquette)

bird-watching

hidden picture puzzle

Computing

attributing a sequence number (packet, message, etc.)

Sensitive

searching blindly

search tree; decision tree

Sensitive

blindly groping

scanning surface; test surface

Computing

tree search

(animal's) foraging

spring outing

exploratory excavation; prospecting

expedition vessel; exploration ship

research vessel; research ship

Poetical term

going out in search of plum blossoms; plum-blossom viewing

(active) sonar

Abbreviation

fishfinder