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
Word Origin and History for feeler
early 15c., "one who feels," agent noun from feel (v.). Of animal organs, 1660s. Transferred sense of "proposal put forth to observe the reaction it gets" is from 1830. Related: Feelers.
Science definitions for feeler
Idioms and Phrases with feeler
see put out feelers.