To enlarge by addition or commenting; to treat copiously by adding particulars, illustrations, etc.; to expand.
To add content that is not present in the source text to the target text, usually to improve the fluency of the translation.
To increase the amplitude of something, especially of an electric current.
To render larger, more extended, or more intense.
To fold or pleat (usually used in passive).
Folded multiple times lengthwise like a fan, usually lending stiffness to a flat structure such as a leaf; corrugated; pleated.