Definitions from Wiktionary ( )

▸ noun:  (chiefly derogatory, slang) Someone who lacks confidence or courage, is weak, ineffectual, irresolute and wishy-washy.
▸ verb:  (intransitive, slang) To behave submissively.
▸ verb:  (transitive, slang) To make (something) weak or wimpy.
▸ adjective:  (slang) Weak, wimpy.
▸ noun:  Alternative letter-case form of WIMP
▸ noun:  (astronomy, physics) Acronym of weakly interacting massive particle. [(astronomy, physics) A hypothetical class of particle, proposed to explain the dark matter problem.]
▸ noun:  (graphical user interface) Acronym of window, icon, menu, pointer (a graphical interface paradigm). [An opening, usually covered by one or more panes of clear glass, to allow light and air from outside to enter a building or vehicle.]
▸ noun:  (graphical user interface, very rare) Acronym of window-icon-mouse program.
▸ noun:  (Internet software) Initialism of Windows, Internet Information Services, MySQL/MariaDB, and PHP/Perl/Python. [(operating systems, trademark) Microsoft Windows, an operating system with a WIMP graphical user interface that dominates the personal computer market.]

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