“They wanted to glean good ideas and figured their opponent the CIA was doing it, so they had to do it too,” Grady said.
The government's community service website, serve.gov, also features a USDA "Let's glean!"
“The biggest mistake people make is to glean from their most recent CSI episode, which is that one size fits all,” he added.
early 14c., from Old French glener (Modern French glaner) "to glean," from Late Latin glennare "make a collection," perhaps from Gaulish (cf. Old Irish do-glinn "he collects, gathers," Celt. glan "clean, pure"). Figurative sense was earlier in English than the literal one of "gather grain left by the reapers" (late 14c.). Related: Gleaned; gleaning.
The corners of fields were not to be reaped, and the sheaf accidentally left behind was not to be fetched away, according to the law of Moses (Lev. 19:9; 23:22; Deut. 24:21). They were to be left for the poor to glean. Similar laws were given regarding vineyards and oliveyards. (Comp. Ruth 2:2.)