castle, defense, fort(-ress), (strong) hold, be hunted, net, snare, strong place

Boyd’s Bible Dictionary:

(fort). The “Tower of Antonia,” N. W. corner of the Temple at Jerusalem (Acts 21:34,37; 22:24; 23:10,16,32).

Concise Bible Dictionary:

See FORTRESS.

Strong’s Dictionary of Hebrew Words:

Transliteration:
matsuwd
Phonic:
maw-tsood’
Meaning:
or (feminine) mtsuwdah {mets-oo-daw'}; or mtsudah {mets-oo-daw'}; for 4685; a net, or (abstractly) capture; also a fastness; --castle, defense, fort(-ress), (strong) hold, be hunted, net, snare, strong place.