the GNU version of the Collaborative International Dictionary of English
verb-intransitive. To come to one point; to meet in, or converge toward, a common center; to have a common center.
v. To draw or direct to a common center; to bring together at a focus or point, as two or more lines; to concentrate.
The Century Dictionary and Cyclopedia
To draw or direct to a common center; bring together; concentrate; center; focus.
To converge to or meet in a common center; combine or conjoin in one object; center; focus.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. bring into focus or alignment; to converge or cause to converge; of ideas or emotions
Word Usage
"It is certain he had a way of bringing it into less form for the many sudden causes he had to do with in the streets; but how he contrived to correct, sweeten, concenter, and qualify it — I vex not my spirit with the inquiry."