specialize

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To pursue a special activity, occupation, or field of study.
2. v. Biology To develop so as to become adapted to a specific function or environment; undergo specialization.
3. v. To concentrate on a particular activity or product: The shop specializes in mountain-climbing gear.
4. v. To make specific mention of; particularize.
5. v. To give a particular character or function to: specialized her field of research.
6. v. Biology To adapt to a particular function or environment; cause to undergo specialization.
7. v. To specify the payee in endorsing (a check).

Century Dictionary and Cyclopedia

1. To make individually or generically special or distinct; make specifically distinct; differentiate from other kinds in form, adaptation, or characteristics, as by a process of physical development; limit to a particular kind of development, action, or use. See specialization, 3.
2. To mention specially or in detail; particularize; specify.
3. To act in some special way; pursue a special course or direction; take a specific turn or bent.
4. Also spelled specialise.

Wiktionary

1. v. To mention specially; to particularize.
2. v. To apply to some specialty or limited object; to assign to a specific use; as, specialized knowledge.
3. v. biology To supply with an organ or organs having a special function or functions.

GNU Webster's 1913

1. v. To mention specially; to particularize.
2. v. To apply to some specialty or limited object; to assign to a specific use.
3. v. (Biol.) To supply with an organ or organs having a special function or functions.

WordNet 3.0

1. v. suit to a special purpose
2. v. become more focus on an area of activity or field of study
3. v. be specific about
4. v. devote oneself to a special area of work
5. v. evolve so as to lead to a new species or develop in a way most suited to the environment