owls is a form of:

Reversion



noun
1.
(reverting to possess something whenits present holder relinquishes it, the returning of a right or property in this) ការត្រឡប់ទៅដូចដើមវិញ, ការត្រឡប់មកវិញ, ការផ្ញើត្រឡប់វិញ, ការធ្វើឡើងវិញ, មកវិញ, ដំណើរប្រែត្រឡប់, ទៅមក, សិទ្ធិត្រឡប់វិញ
2.
(ច្បាប់) សិទ្ធិត្រឡប់វិញ
Example: An interest created by operation of law by a conveyance of less than a total interest in property that leaves in the grantor some right or interest in the property in the future.
ឧទាហរណ៍៖ ផលប្រយោជន៍មួយដែលបង្កើតឡើងដោយអនុភាពនៃច្បាប់តាមរយៈការផ្ទេរផលប្រយោជន៍ដែលតិចជាងផលប្រយោជន៍ក្នុងទ្រព្យសម្បត្តិ្តទាំងមូលដែលបន្សល់សិទ្វិ​ឬផលប្រយោជន៍ខ្លះនៅក្នុងទ្រព្យសម្បត្តិ្តនោះអោយទៅអនុប្បទាយីនាពេលអានាគត ។
ENGLISH MEANING
noun
1.
The act of returning, or coming back; return.
2.
That which reverts or returns; residue.
3.
The returning of an esttate to the grantor or his heirs, by operation of law, after the grant has terminated; hence, the residue of an estate left in the proprietor or owner thereof, to take effect in possession, by operation of law, after the termination of a limited or less estate carved out of it and conveyed by him.
4.
Hence, a right to future possession or enjoiment; succession.
5.
A payment which is not to be received, or a benefit which does not begin, until the happening of some event, as the death of a living person.
6.
A return towards some ancestral type or character; atavism.