(transitive) To make (something) larger.

(intransitive) To grow larger.

(transitive) To increase the capacity of; to expand; to give free scope or greater scope to; also, to dilate, as with joy, affection, etc.

(intransitive) To speak or write at length upon or on (some subject); expand; elaborate

(nautical) To get more astern or parallel with the vessel's course; to draw aft; said of the wind.

(law) To extend the time allowed for compliance with (an order or rule).