Define a word from the terminal

lingua ●○○

Dictionary lookups without leaving the shell — the same engine behind force-touch lookup, using whatever dictionaries you have enabled in Dictionary.app. Works on phrases too (lingua define "lingua franca"). Exits 1 when there's no entry, so it scripts cleanly.

$ lingua define serendipity
serendipity ser·en·dip·i·ty | ˈserənˈdipədē | noun the occurrence and development of events by chance in a happy or beneficial way...
Requires: lingua 0.6+