Sieging

noun
1.
the act or process of surrounding and attacking a fortified place in such a way as to isolate it from help and supplies, for the purpose of lessening the resistance of the defenders and thereby making capture possible.
2.
any prolonged or persistent effort to overcome resistance.
3.
a series of illnesses, troubles, or annoyances besetting a person or group:
a siege of head colds.
4.
a prolonged period of trouble or annoyance.
5.
Also, sedge. Ornithology.

a flock of herons.
the station of a heron at prey.

6.
the shelf or floor of a glassmaking furnace on which the glass pots are set.
7.
Obsolete.

a seat, especially one used by a person of distinction, as a throne.
station as to rank or class.

verb (used with object), sieged, sieging.
8.
to assail or assault; besiege.
Idioms
9.
lay siege to, to besiege:
The army laid siege to the city for over a month.
noun
1.

the offensive operations carried out to capture a fortified place by surrounding it, severing its communications and supply lines, and deploying weapons against it
(as modifier): siege warfare

2.
a persistent attempt to gain something
3.
a long tedious period, as of illness, etc
4.
(obsolete) a seat or throne
5.
lay siege to, to besiege
verb
6.
(transitive) to besiege or assail