Examples from the Web for feeler
Sellers threw a lot or two on the market, "as a feeler," and they sold well.The Gilded Age, Complete|Mark Twain and Charles Dudley Warner
A feeler reached out, to be bitten off; then another, to no avail."Where Angels Fear to Tread" and Other Stories of the Sea|Morgan Robertson
"But I don't like doing that sort of thing," she went on, throwing out a feeler.Mammon and Co.|E. F. Benson
But he sent out a feeler by saying suggestively, "Oh,—about five million dollars."The Land of Tomorrow|William B Stephenson, Jr.
Then it thrusts out its tail-foot, swells its body to an oval globe, protrudes its feeler, and slightly exposes a row of cilia.Marvels of Pond-life|Henry J. Slack
British Dictionary definitions for feeler
Science definitions for feeler
Idioms and Phrases with feeler
see put out feelers.