Extended Strong's Hebrew Lexicon (Brown-Driver-Briggs based)
to gather/restrain/fortify
Usage: 1) to gather, restrain, fence, fortify, make inaccessible, enclose 1a) (Qal) 1a1) to cut off 1a2) fortified, cut off, made inaccessible (pass participle) 1a3) secrets, mysteries, inaccessible things (subst) 1b) (Niphal) to be withheld 1c) (Piel) to fortify