ἀκρίς, -ίδος, ἡ [in LXX chiefly for אַרְבֶּה, also for חָגָב, etc. ;] a locust: Refs Mat.3:4, Mrk.1:6, Rev.9:3, 7.† (AS)
Thayer:
1) a locust, particularly that species which especially infests oriental countries, stripping fields and trees. Numberless swarms of them almost every spring are carried by the wind from Arabia into Palestine, and having devastated that country, migrate to regions farther north, until they perish by falling into the sea. The Orientals accustomed to feed upon locusts, either raw or roasted and seasoned with salt (or prepared in other ways), and the Israelites also were permitted to eat them.
ἀκρίς
akris
ak-rece'
Apparently from the same as G206; a locust (as pointed, or as lighting on the top of vegetation)
ἄκρον
akron
ak'-ron
Neuter of an adjective probably akin to the base of G188; the extremity
KJV Usage: one end . . . other, tip, top, uttermost part.
G196 ἀκριβέστατοςἀκριβέστατος
akribestatos
ak-ree-bes'-ta-tos
Superlative of ἀκριβης akribēs (a derivative of the same as G206); mostexact
KJV Usage: most straitest.
G203 ἀκροβυστίαἀκροβυστία
akrobustia
ak-rob-oos-tee'-ah
From G206 and probably a modified form of πόσθη posthē (the penis or male sexual organ); the prepuce; by implication an uncircumcised (that is, gentile, figuratively unregenerate) state or person
KJV Usage: not circumcised, uncircumcised [with G2192], uncircumcision.
G204 ἀκρογωνιαῖοςἀκρογωνιαῖος
akrogōniaios
ak-rog-o-nee-ah'-yos
From G206 and G1137; belonging to the extreme corner
KJV Usage: chief corner.
G205 ἀκροθίνιονἀκροθίνιον
akrothinion
ak-roth-in'-ee-on
From G206 and θίς this (a heap); properly (in the plural) the topoftheheap, that is, (by implication) bestofthebooty
KJV Usage: spoils.
G891 ἄχρι, ἄχριςἄχρι, ἄχρις
achri achris
akh'-ree,akh'-rece
Akin to G206 (through the idea of a terminus); (of time) until or (of place) upto
KJV Usage: as far as, for, in (-to), till, (even, un-) to, until, while.