Encumbrance

An encumbrance is a right to, interest in, or legal liability on property that does not prohibit passing title to the property but that may diminish its value. Encumbrances can be classified in several ways. They may be financial (for example, liens) or non-financial (for example, easements, private restrictions). Alternatively, they may be divided into those that affect title (for example, lien, legal or equitable charge) or those that affect the use or physical condition of the encumbered property (for example, restrictions, easements, encroachments). Encumbrances include security interests, liens, servitudes (for example, easements, wayleaves, real covenants, profits a prendre), leases, restrictions, encroachments, and air and subsurface rights. Also, those considered as potentially making the title defeasible are encumbrances, for example, charging orders, building orders and structure alteration. Encumbrance: charge upon or claim against land arising out of private grant or a contract.
Jurisdictions.
Hong Kong.
In Hong Kong, there is statutory definition of "encumbrance". In Conveyancing and Property Ordinance (Cap. 219) it reads: """encumbrance" (產權負擔) includes a legal and equitable mortgage, a trust for securing money, a lien, a charge of a portion, annuity, or other capital or annual sum; and "encumbrancer" (產權負擔人) has a meaning corresponding with that of "encumbrance" and includes every person entitled to the benefit of an encumbrance, or to require payment and discharge thereof"".
Other uses.
Colleges.
It is also a term used by colleges and universities to describe limitations placed on a student's account due to late payment, late registration, or other reasons stated by the institution. An encumbrance can prohibit students from registering for classes, affect the release of their transcripts, or delay the reception of their diplomas.
Accounting.
In management accounting, "encumbrance" is a management tool used to reflect commitments in the accounting system and attempt to prevent overspending. Encumbrances allow organizations to recognize future commitments of resources prior to an actual expenditure. 
Intellectual property.
An example of Intellectual property encumbrance is "encumbered code", software that cannot be freely distributed due to intellectual property rights.