1. (n.) The whole region or extent of country which contributes to the supply of a river or lake.

2. (n.) The line of division between two adjacent rivers or lakes with respect to the flow of water by natural channels into them; the natural boundary of a basin.

Continental Divide Great Divide aberrate abrupt add aggravate agree to differ agree to disagree algebraize alienate allocate allot alphabetize analyze anatomize apportion appraise appreciate arrange assay assess assign assort atomize ballot be at variance be in dissent be partners in beg to differ bifurcate bisect bolt bound branch branch out break down break up break with broach by two calculate calibrate caliper canvass carve carve up cast cast a ballot cast off cast out catalog categorize change check a parameter chink chop chop logic cipher circumscribe class classify cleave codify collate come between compute contradistinguish cooperate cordon cordon off count crack crevasse cull out cut cut adrift cut in two cut off cut open cut out cut up deal deal out decrease delete demarcate demark depart deploy desynonymize detach dial dichotomize differ difference differentiate digest dimidiate disaccord disaffect disagree disagree with disarticulate disburse disconnect discord discord with discriminate disengage disequalize disjoin disjoint dispart dispense disperse dissect dissent dissent from dissociate distinguish distribute district disunite divaricate diverge diversify divide into shares divide on divide up divide with divorce divvy divvy up divvy up with dole out dope out draw the line drop out eject enclose estimate estrange evaluate expel extract roots fall out fan out fan the flame fathom fence off figure figure in figure out file fission fissure fix fly open fork gauge ghettoize gin give out go away go even stephen go fifty-fifty go halvers go halves go off go shares gradate grade graduate group halve have a falling-out in half incise increase index individualize individuate insulate irritate isolate keep apart keep aside lay aside lay open leave light the fuse limit list make a distinction make trouble mark mark off mark out mark the interface measure measure out mensurate mete mete out meter modify multiply not agree number ope open open up oppose order organize outspread pace panel parcel parcel out part part company particularize partition personalize pick out pigeonhole pit against place plumb plump poll portion prize probe prorate provoke pull away pull back pull out put aside put in order quantify quantize quarantine quota ramify range rank rate ration reckon reduce reduce to elements