fire step
(military, chiefly historical) A step or platform dug into the front side of a military trench - allowing soldiers to stand on it in order to fire over the parapet.
(computer hardware, trademark, informal) A USB flash drive. / (communication, space science) Initialism of unified S-band (a communication system used for the Apollo program).
comparative form of able: more able
(mycology) A cystidium which easily stains with a chemical reagent or has visible or granular contents.
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