from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A passage for drawing up smoke or air.
- n. Understanding; comprehension: very quick on the uptake.
- n. An act of taking in or absorbing, especially into a living organism.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. understanding, comprehension
- n. absorption, especially of food or nutrient by an organism
- n. a chimney
- v. To take up, to lift.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To take into the hand; to take up; to help.
- n. The pipe leading upward from the smoke box of a steam boiler to the chimney, or smokestack; a flue leading upward.
- n. Understanding; apprehension.
from The Century Dictionary and Cyclopedia
- n. A pipe or duct or channel leading gas, water, steam, or other liquid upward from below: used of part of a boiler furnace flue-system, in the gas-producer, blast-furnace, and elsewhere; specifically, a flue leading hot gas from the combustion-chamber or smoke-box to the chimney, in gas-making or in boiler-settings.
- To take up; take into the hand.
- To succor; help.
- n. The act of taking up; lifting.
- n. Perceptive power; apprehension; conception: as, he is quick in the uptake. Scott, Old Mortality, vii. The upcast pipe from the smoke-box of a steam-boiler, leading to the chimney.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the process of taking food into the body through the mouth (as by eating)
- n. a process of taking up or using up or consuming
From Middle English uptaken, equivalent to up- + take. (Wiktionary)