couldimp.[OF. coude. The l was inserted by mistake, under the influence of should and would.] Was, should be, or would be, able, capable, or susceptible. Used as an auxiliary, in the past tense or in the conditional present.()n.[F. coule, fr. couler to run or flow.] (Geol.) A stream()n.[F.]1. Color; -- chiefly used in a few French phrases, as couler de rose, color of rose; and hence, adjectively, rose-colored; roseate.()2. A suit of cards, as hearts or clubs; -- used in some French games.()n.[F., fr. couler to flow, glide.]1. A piece of timber having a groove in which something glides.()2. One of the side scenes of the stage in a theater, or the space included between the side scenes.()