uptake (n.)youdaoicibaDictYouDict[uptake 词源字典]
"capacity for understanding, perceptive power," 1816, from up (adv.) + take (v.). Compare Middle English verb uptake "to pick or take up" (c. 1300). Meaning "pipe leading up from the smoke box of a steam boiler to the chimney" is from 1839.[uptake etymology, uptake origin, 英语词源]