Most can be found under the following git repository, though some of the tools come from elsewhere.
https://thrig.me/src/lingua.git
The core is the shell midnoi, which accesses various lojban tools, the dictionary mitysisku by default.
$ midnoi
? -n white
white - blabi (gismu)
white - abstract - labzilska (lujvo)
? blabi
blabi (gismu)
$x_{1}$ is white/very-light colored [color adjective].
...
? ,v
lujvo> blabi mlatu
Possible rafsi for input words (avoiding long rafsi):
blabi: lab
mlatu: mlatu
---------------------
Score Lujvo
---------------------
* 7917 labmlatu
lujvo> -l -a blabi mlatu
Possible rafsi for input words:
blabi: lab blab
mlatu: mlatu
---------------------
Score Lujvo
---------------------
* 7917 labmlatu
10027 blabymlatu
lujvo> ,c
camxes> mi penmi pa labmlatu ca le critu
(mi [penmi {<pa labmlatu> <ca (le critu)>}])
camxes> -m T pa mlatu be sekai le ka pendo
([{pa BOI} {mlatu <be ([se kai] [le {ka <pendo ...
camxes> ,g
mathu> gei 42
pa gei vo pi re
4.2e+1
mathu> ,
? p^I
pa pendo penmi
One can also use sqlite database that mitysisku uses directly. Perhaps you are interested in words that involve "audience" in some way, which involves relearning what the schema looks like, what those columns contain, and then some winnowing of the results.
$ sqlite3 ~/.local/share/mitysisku/lojban.db
...
sqlite> .schema
...
sqlite> select * from jbo where word='mlatu';
740|0|mlatu|$x_{1}$ is a cat/[puss/pussy/kitten] [feline animal] of species/breed $x_{2}$; (adjective:) $x_{1}$ is feline.|officialdata|cat|gismu|See also {cinfo}, {tirxu}, {gerku}.||0
sqlite> select type,word from jbo where definition like '%audience%';
...
sqlite> select type,word from jbo where definition like '%audience%' and type='gismu';
gismu|barja
gismu|ckeji
gismu|ctuca
gismu|cukta
gismu|cusku
gismu|draci
gismu|gusta
gismu|jarco
gismu|karni
gismu|lisri
gismu|notci
gismu|pante
gismu|pemci
gismu|pinka
gismu|preti
gismu|prosa
gismu|sanga
gismu|skicu
gismu|skina
gismu|stidi
gismu|tigni
gismu|xatra
Of course one might also use the -D flag to mitysisku to search the definition.