A guest relation officer.
"The map showed a small 'gro' near the old oak tree where we decided to have our picnic."
Abbreviation of grove.
In plain English: A small forest or cluster of trees.
"We picnicked in the gro last Saturday."
Disgusting, unpleasant; gross.
"That old sock smelled so gro I couldn't even bring myself to put it back in the hamper."
In plain English: Gro means something is really nasty or makes you feel uncomfortable.
"The swamp water looked gro and smelled even worse."
Guerrero, a state of Mexico.
"After visiting the bustling markets of Guadalajara, we flew north to explore the historic ruins in Gro."
The cardinal number occurring after el do el (↋↋) and before gro one (101) in a duodecimal system. Written 100, decimal value 144.
"The ancient scribe struggled to decipher the base-12 multiplication table where 'gro' represented the number fourteen-four."