לקט laqat "gather, glean" although the word seems primarily to mean "gather" and is used of both 
useful objects (stones in Gen 31:4), 
food (Ex 16:4) and even 
people or animals (Jdgs 11:3), 
it comes to refer particularly to the rule that when harvesting dropped grain or fruit should be left for the poor (Lev 19:9-10) this leads to the appropriate translation  "glean" (an old word for gathering small quantities) in several passages. Since "glean" has few other uses in contemporary English this gives the impression of a technical term.