| a gadget; dingus; thingumbob. |
| the offspring of a zebra and a donkey. |
| musth also must (mŭst) Pronunciation Key
An annual period of heightened aggressiveness and sexual activity in male elephants. |
must (do) definitionand must
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pass muster
Meet a required standard, as in That yard cleanup won't pass muster with Mom. This expression originally meant "to undergo a military review without censure," muster referring to an assembling of troops for inspection or a similar purpose. [Late 1500s]