Word Origin & History
digearly 14c. (diggen), of uncertain origin, probably related to dike and ditch, either via O.Fr. diguer (ult. from a Gmc. source), or directly from an unrecorded O.E. word. Native words were deolfan, grafan (medial -f- pronounced as "v" in O.E.). Meaning "thrust or poke" (as with an elbow) is from 1819;
EXPANDfigurative sense of this is from 1840. Slang sense of "understand" first recorded 1934 in Black English, probably based on the notion of "excavate." A slightly varied sense of "appreciate" emerged 1939. Noun meaning "archaeological expedition" is from 1896. Related: Digging.
dug"animal nipple," or, contemptuously, "the human female breast," 1530, origin obscure, related to Swed. dagga, Dan. dægge "to suckle."
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