Noun
concrete verb (plural concrete verbs)
(Slavic grammar) A verbal aspect in verbs of motion that is unidirectional (as opposed to multidirectional), a definitely directed motion, or a single, completed action (instead of a repeated action or series of actions). Concrete verbs may be either imperfective or perfective.
(concrete) I went to the post office. (and am there now, unidirectional)
(abstract) I went to the post office. (there and back, multidirectional)
(concrete) I went to the theater and had an accident. (the event occurred at the theater)
(abstract) I went to the theater and had an accident. (the event occurred during the trip there and back)
(concrete) I flew to Frankfurt. (a single, completed action)
(abstract) I like to fly. (repeated action)