| drain | | |
| n. (act) | 1. drain, drainage | emptying something accomplished by allowing liquid to run out of it. |
| ~ emptying, evacuation, voidance | the act of removing the contents of something. |
| n. (artifact) | 2. drain | tube inserted into a body cavity (as during surgery) to remove unwanted material. |
| ~ tube, tubing | conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases. |
| ~ surgery | the branch of medical science that treats disease or injury by operative procedures.; "he is professor of surgery at the Harvard Medical School" |
| n. (artifact) | 3. drain, drainpipe, waste pipe | a pipe through which liquid is carried away. |
| ~ culvert | a transverse and totally enclosed drain under a road or railway. |
| ~ pipage, pipe, piping | a long tube made of metal or plastic that is used to carry water or oil or gas etc.. |
| ~ scupper | drain that allows water on the deck of a vessel to flow overboard. |
| ~ sewer, cloaca, sewerage | a waste pipe that carries away sewage or surface water. |
| ~ soil pipe | drain that conveys liquid waste from toilets, etc.. |
| ~ trap | drain consisting of a U-shaped section of drainpipe that holds liquid and so prevents a return flow of sewer gas. |
| n. (act) | 4. drain | a gradual depletion of energy or resources.; "a drain on resources"; "a drain of young talent by emigration" |
| ~ depletion | the act of decreasing something markedly. |
| ~ drawing off, drawing | act of getting or draining something such as electricity or a liquid from a source.; "the drawing of water from the well" |
| ~ brain drain | depletion or loss of intellectual and technical personnel. |
| v. (motion) | 5. drain, run out | flow off gradually.; "The rain water drains into this big vat" |
| ~ course, flow, run, feed | move along, of liquids.; "Water flowed into the cave"; "the Missouri feeds into the Mississippi" |
| v. (consumption) | 6. drain | deplete of resources.; "The exercise class drains me of energy" |
| ~ deplete, use up, wipe out, eat up, exhaust, run through, consume, eat | use up (resources or materials).; "this car consumes a lot of gas"; "We exhausted our savings"; "They run through 20 bottles of wine a week" |
| v. (change) | 7. drain | empty of liquid; drain the liquid from.; "We drained the oil tank" |
| ~ empty | make void or empty of contents.; "Empty the box"; "The alarm emptied the building" |
| v. (change) | 8. debilitate, drain, enfeeble | make weak.; "Life in the camp drained him" |
| ~ weaken | lessen the strength of.; "The fever weakened his body" |
| ~ emaciate, macerate, waste | cause to grow thin or weak.; "The treatment emaciated him" |
| ebb | | |
| n. (process) | 1. ebb, ebbing, wane | a gradual decline (in size or strength or power or number). |
| ~ decline, diminution | change toward something smaller or lower. |
| n. (event) | 2. ebb, reflux | the outward flow of the tide. |
| ~ ebbtide | the tide while water is flowing out. |
| ~ flow, flowing | the motion characteristic of fluids (liquids or gases). |
| v. (motion) | 3. ebb, ebb away, ebb down, ebb off, ebb out | flow back or recede.; "the tides ebbed at noon" |
| ~ fall back | move back and away from.; "The enemy fell back" |
| v. (competition) | 4. ebb | hem in fish with stakes and nets so as to prevent them from going back into the sea with the ebb. |
| ~ besiege, circumvent, beleaguer, hem in, surround | surround so as to force to give up.; "The Turks besieged Vienna" |
| v. (change) | 5. ebb | fall away or decline.; "The patient's strength ebbed away" |
| ~ recede | become faint or more distant.; "the unhappy memories of her childhood receded as she grew older" |
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