use one thing for many purposes / work someone hard

a letter or character (symbol for a sound or a word) / (linguistics) script, writing system / (specific to Japanese) a written mora, a kana / writing in general, written words

a letter, a character (symbol for a sound or a word) / (linguistics) script, writing system / (specific to Japanese) a written mora, a kana / writing in general, written words

(colloquial) Clipping of 意味深長 (imishinchō).

meaningless

nonsense / meaninglessness

meaningless

meaningful; suggestive; significant

semantics (as a field of study), semasiology

profound, deeply meaningful